IGCSE Physics Light: Paper 1 MCQ Questions

www.megalecture.com · www.youtube.com/@megalecture

Online tutoring for Cambridge IGCSE, O Level & A Level Physics

Fahad H. Ahmad

Contact: +92 323 509 4443

M.Eng NUS Singapore · B.Eng NUST · 15+ years of teaching experience in Singapore, UAE & Pakistan · 60,000+ subscribers and 20 million+ video lecture views.

www.Megalecture.com · +92 323 509 4443

IGCSEPHYSICS0625·TOPICALPASTPAPERS

Light

Paper 1 — Multiple-Choice Questions (topical compilation)

3.2 Light PAPER 1

A ray of light strikes a plane mirror and is reflected.

x y w z normal

Which pair of angles must be equal in value?

A w and x B w and y C x and y D x and z

5054/11/M/J/11/Q21

In which diagram is the path of the light ray not correct?

air water

A B D C

air air air air air glass glass perspex

5054/11/M/J/11/Q22

3 The ray diagram shows two rays from a point on an object placed in front of a diverging (concave) lens.

diverging lens object

What are the properties of the image produced?

A real and larger than the object

B real and smaller than the object

C virtual and larger than the object

D virtual and smaller than the object

5054/11/M/J/11/Q23

Light is incident on a mirror and is reflected as shown.

mirror 80°

What is the angle of incidence and the angle of reflection?

angle of incidence / ° angle of reflection / °

A

B

C

D

5054/11/M/J/12/Q22

Light is incident on one face of a glass block at an angle of incidence of 40°. The glass block is in air.

The refractive index of the glass is 1.46.

What is the angle of refraction inside the glass block?

A 26° B 27° C 58° D 70°

5054/11/M/J/12/Q23

Light is incident on one face of a glass block at an angle of incidence of 40°. The glass block is in air.

The refractive index of the glass is 1.46.

What is the angle of refraction inside the glass block?

A 26° B 27° C 58° D 70°

5054/11/M/J/12/Q23

The diagram shows a ray of light directed at a plane mirror.

40° mirror

What are the angle of incidence and the angle of reflection?

angle of incidence angle of reflection

A 40° 40°

B 40° 50°

C 50° 40°

D 50° 50°

5054/12/M/J/12/Q22

Light travels through a glass block as shown.

Which angle is the critical angle for light in the glass?

D C A B

air glass

5054/12/M/J/12/Q23

A man is short-sighted.

Which ray diagram shows what happens in his eye when he looks at a distant object?

A B C D

5054/12/M/J/12/Q24

Which characteristics describe an image formed by a vertical plane mirror?

A real and inverted

B virtual and not inverted

C real and larger than the object

D virtual and smaller than the object

5054/11/M/J/13/Q19

A ray of light meets the face of a glass block at an angle of 30° as shown.

30° r glass block

The refractive index of the glass is 1.5.

What is the angle of refraction r inside the glass block?

A 19° B 20° C 35° D 40°

5054/11/M/J/13/Q20

The diagram shows a thin converging lens of focal length f.

Where must an object be placed to produce a real image in the position shown?

A B C D

f f image

5054/11/M/J/13/Q21

13 Which length is the focal length of the lens?

A B C D

lens

5054/12/M/J/13/Q26

The diagram shows two divergent rays of light from an object O being reflected from a plane mirror.

At which position is the image formed?

O

A B C D

5054/11/M/J/14/Q24

15 Three rays of light are incident on the boundary between a glass block and air.

The angles of incidence are different.

20° 40° 50° air glass

What is a possible critical angle for light in the glass?

A 15° B 30° C 45° D 60°

5054/11/M/J/14/Q25

Which row applies to a short-sighted eye viewing a distant object?

position of the image lens needed for correction

A behind the retina converging lens

B behind the retina diverging lens

C in front of the retina converging lens

D in front of the retina diverging lens

5054/11/M/J/14/Q27

A ray of light is incident on the surface of a glass block, as shown in the diagram below.

air 45° glass x

The refractive index of the glass is 1.5.

The light ray changes direction when entering the glass.

What is the angle x through which the ray moves?

A 30° B 28° C 17° D 15°

5054/11/M/J/15/Q22

An image is formed by a thin converging lens when it is used as a magnifying glass.

What is the correct description of the image?

A real and erect

B real and inverted

C virtual and erect

D virtual and inverted

5054/11/M/J/15/Q23

19 A ray of light travels from X to Y along an optical fibre. The angle of incidence at Y is greater than the critical angle.

In which direction does the ray of light travel after reaching point Y?

A B C D

X

Y optical fibre

5054/11/M/J/15/Q24

20 A ray of light in glass is incident on the surface at an angle c. The angle c is the critical angle.

Which diagram shows what happens to the light?

air glass c

A

air glass c

B C D

air glass c air glass c

5054/12/M/J/15/Q25

A ray of light is incident on the surface of a glass block, as shown in the diagram below.

air 45° glass x

The refractive index of the glass is 1.5.

The light ray changes direction when entering the glass.

What is the angle x through which the ray moves?

A 30° B 28° C 17° D 15°

5054/12/M/J/15/Q26

An image is formed by a thin converging lens when it is used as a magnifying glass.

What is the correct description of the image?

A real and erect

B real and inverted

C virtual and erect

D virtual and inverted

5054/12/M/J/15/Q27

Light is incident on a mirror. The light is reflected from the mirror.

The angle of incidence is i and the angle of reflection is r.

Which diagram correctly shows i and r ?

i r

A

i r

B

i r

C

i r

D

5054/11/M/J/16/Q21

24 Which length is the focal length of the lens shown in the diagram?

A B C D

lens

5054/11/M/J/16/Q22

Light passes from air into a glass block of refractive index 1.5, as shown.

glass block

57° normal

NOT TO SCALE

What is the angle of refraction in the glass and what is the critical angle?

angle of refraction critical angle

A 34° 42°

B 34° 60°

C 38° 42°

D 38° 60°

5054/11/M/J/16/Q23

The diagram shows light incident on a plane mirror.

40° ray of light

P

Q mirror

Which row gives the angle of reflection and the name of line PQ?

angle of reflection the line PQ is called the

A 40° normal

B 40° reflected ray

C 50° normal

D 50° reflected ray

5054/12/M/J/16/Q18

27 The rays of light from a ray-box pass through three lenses placed at positions 1, 2 and 3.

position 1 position 2 position 3 ray-box

What type of lens is used at each position?

position 1 position 2 position 3

A converging converging converging

B converging converging diverging

C diverging converging diverging

D diverging diverging converging

5054/12/M/J/16/Q20

Light passes from air into a block of glass, as shown.

x w y z glass

Which expression is equal to the refractive index of glass?

A y w sin sin B z w sin sin C w y sin sin D x z sin sin

5054/12/M/J/16/Q21

Light travelling in glass is incident on a glass-air boundary. The angle of incidence of the light is greater than the critical angle.

Which arrow shows the direction of the light after it is incident on the boundary?

air glass

A

incident ray normal

D C B

5054/11/M/J/17/Q27

30 Light strikes the top surface of a glass block at an angle of 15° as shown.

15° r glass block

(not to scale)

The refractive index of glass is 1.5.

What is the angle of refraction r ?

A

10°

B

23°

C

40°

D

50°

5054/11/M/J/17/Q28

31 A narrow beam of yellow and green light is separated as it passes through a prism.

Which ray diagram is correct?

A

yellow green

B

yellow green

C

yellow green

D

yellow green

5054/12/M/J/17/Q28

32 The diagram shows two divergent rays of light from an object O being reflected from a plane mirror.

At which position is the image formed?

O

A B C D

mirror

5054/11/M/J/18/Q22

Which statement is correct?

A

Total internal reflection only occurs when light travels from air into glass.

B

The larger the refractive index of glass, the larger is the critical angle.

C

When total internal reflection occurs, the angle of incidence is equal to the angle of reflection.

D

When total internal reflection occurs, the angle of incidence is less than the critical angle.

5054/11/M/J/18/Q23

The diagram shows the paths of two rays from the top of an object through a lens.

object lens

The object is viewed from the opposite side of the lens to the object.

How does the image compare with the object?

A

larger and inverted

B

larger and the same way up

C

smaller and inverted

D

smaller and the same way up 5054/11/M/J/18/Q24

Which statement about blue light is correct?

A

Blue light has a smaller frequency than red light.

B

Blue light has a longer wavelength than red light.

C

Blue light has the same speed in glass as red light.

D

Blue light is refracted more by a glass prism than red light.

5054/12/M/J/18/Q28

A ray of light strikes a plane mirror at an angle of incidence of 20°.

The angle of incidence is then increased by 5°.

What is the new angle between the incident ray and the reflected ray?

A

10°

B

25°

C

45°

D

50°

5054/11/M/J/19/Q24

37 A parallel beam of light is incident on a thin diverging lens.

The focal length of the lens is FL, as shown in the diagram.

F L position of diverging lens

Which ray diagram shows the beam after it has passed through the lens?

A

F L

B

F L

C

F L

D

F L

5054/11/M/J/19/Q25

The following lists show colours of the spectrum.

Which list shows these colours in order of increasing frequency?

A

blue, violet, red, orange, yellow, green

B

green, blue, violet, red, orange, yellow

C

red, orange, violet, yellow, green, blue

D

red, orange, yellow, green, blue, violet

5054/11/M/J/19/Q26

An object is placed at a distance from a converging lens that is equal to twice the focal length of the lens.

Which statement about the image is correct?

A

It is enlarged.

B

It is inverted.

C

It is on the same side of the lens as the object.

D

It is virtual.

5054/12/M/J/19/Q27

40 The lens in the diagram produces an image I of the object O.

F F

O

I

Why is this not the ray diagram for a photographic enlarger?

A

The image is magnified.

B

The image is virtual.

C

The lens is a converging lens.

D

The lens is too thin.

5054/12/M/J/19/Q28

Light enters a glass block at an angle of incidence i and it produces an angle of refraction r in the glass.

glass block r i

Several different values of i and r are measured, and a graph is drawn of sin i against sin r.

Which graph is correct?

sin i sin r

A

sin i sin r

B

sin i sin r

C

1.0

0.5

0.5 1.0 sin i sin r

D

1.0

0.5

0.5 1.0

1.0

0.5

0.5 1.0

1.0

0.5

0.5 1.0

5054/11/M/J/20/Q26

42 A swimming pool is lit by an underwater light.

A ray of light is incident on the water surface.

What is the correct path for the ray of light?

water surface

A B D C

light

5054/11/M/J/20/Q27

Which diagram shows the action of a converging lens on a parallel beam of light?

B A D C

5054/11/M/J/20/Q28

The diagram shows a ray of light incident on the boundary between two mediums W and X.

The mediums have different refractive indexes.

W

X z y

Some light is reflected and some passes along the surface between the two mediums. Angle y is greater than angle z.

Which statement is correct?

A

W has a greater refractive index than X and angle y is equal to the critical angle.

B

W has a greater refractive index than X and angle z is equal to the critical angle.

C

X has a greater refractive index than W and angle y is equal to the critical angle.

D

X has a greater refractive index than W and angle z is equal to the critical angle.

5054/12/M/J/20/Q31

45 A converging glass lens is used to produce a virtual, magnified image.

Which ray diagram shows the rays passing through the converging lens?

B D A C

5054/12/M/J/20/Q33

Light refracts from a liquid into air as shown.

32 air liquid not to scale

The refractive index for light moving from air to the liquid is 1.4.

What is the angle of incidence in the liquid?

A

22

B

37

C

41

D

45

5054/11/M/J/21/Q21

A ray of red light in air enters a semi-circular block.

Which diagram shows the partial reflection and the refraction of the ray?

A B C D

5054/11/M/J/21/Q22

Which statement about human vision is correct?

A

In a normal eye, the image on the retina is magnified and upright.

B

In a long-sighted eye, distant objects form images in front of the retina.

C

Short-sighted eyes produce only virtual images.

D

Short-sight is corrected by the use of a diverging lens. 5054/11/M/J/21/Q23

49 White light enters a prism and forms a spectrum.

The rays in the air are labelled.

Which diagram shows how the white light is dispersed by the prism?

A

red violet

B

violet red

C

red violet

D

violet red white light white light white light white light

5054/11/M/J/21/Q24

50 An object of height 1.5 cm is placed in front of a converging lens of focal length 2.0 cm.

The arrangement is shown on the full-scale ray diagram.

object image object image lens lens

1 cm

1 cm

What is the linear magnification produced by the lens?

A

2.0

B

3.0

C

4.0

D

6.0

5054/12/M/J/21/Q25

In which optical instrument is the distance between the object and the lens less than the focal length of the lens?

A

camera

B

magnifying glass

C

photographic enlarger

D

projector

5054/12/M/J/21/Q26

An object is viewed through a thin converging lens.

The diagram shows the paths of two rays from the top of the object to an eye.

object thin converging lens eye

How does the image compare with the object?

A

It is larger and inverted.

B

It is larger and upright.

C

It is smaller and inverted.

D

It is smaller and upright.

5054/11/M/J/22/Q21

A ray of white light enters a prism as shown.

red light white light blue light

Which row is correct?

wave properties observed frequency of red light compared with frequency of blue light

A

dispersion only smaller

B

refraction only greater

C

dispersion and refraction smaller

D

dispersion and refraction greater

5054/11/M/J/22/Q22

The diagram shows a ray PQ reflected by mirror X to a parallel mirror Y. The reflected ray along

RS is parallel to PQ.

P mirror X mirror Y

S

Q

R

45

Which statement is correct?

A

The angle between PQ and QR is 45.

B

The angle between QR and RS is 180.

C

The angle of incidence of PQ on mirror X is 60.

D

The angle of incidence of QR on mirror Y is 45.

5054/12/M/J/22/Q24

Violet and indigo light have the shortest wavelengths in the spectrum of visible light.

Which three colours, in order of increasing wavelength, immediately follow indigo?

A

blue  green  orange

B

blue  green  yellow

C

green  blue  yellow

D

yellow  green  orange

5054/12/M/J/22/Q26

56 A ray of light enters a glass block at an angle of incidence ii, producing an angle of refraction r in the glass.

glass block r i

Several different values of i and r are measured, and a graph is drawn of sin i against sin r.

Which graph is correct?

sin i sin r

A

sin i sin r

B

sin i sin r

C

0.5

0.5 sin i sin r

D

0.5

0.5

0.5

0.5

0.5

0.5

5054/11/O/N/11/Q21

A boy stands beside a girl in front of a large plane mirror. They are both the same distance from the mirror, as shown.

Where does the boy see the girl’s image?

A D B C

mirror girl boy

5054/11/O/N/11/Q22

An object O is placed in front of a plane mirror.

Which diagram correctly represents the image I formed by the mirror?

O I O I

O I O I

5054/11/O/N/12/Q22

59 In the following diagrams, the angle c is the critical angle.

Which diagram shows the correct path of the light ray?

air glass c

A

air glass c

B

air glass c

C

air glass c

D

5054/11/O/N/12/Q23

An object of height 1.5 cm is placed in front of a converging lens of focal length 2.0 cm.

The arrangement is shown on the full-scale ray diagram.

object image lens

1 cm

1 cm

What is the linear magnification produced by the lens?

A 2.0 B 3.0 C 4.0 D 6.0

5054/11/O/N/12/Q24

Red and violet are the colours at the ends of the visible spectrum.

How do the frequencies and the wavelengths of these colours compare?

higher frequency longer wavelength

A red red

B red violet

C violet red

D violet violet

5054/11/O/N/12/Q25

An object is placed in front of a plane mirror. The image produced is

A real and smaller than the object.

B real and the same size as the object.

C virtual and smaller than the object.

D virtual and the same size as the object.

5054/12/O/N/12/Q22

63 A ray of red light enters a semi-circular glass block normal to the curved surface.

Which diagram shows the partial reflection and refraction of the ray?

A B C D

5054/12/O/N/12/Q23

A lens is used to produce a magnified image, as shown in the scale diagram.

object image

What is the linear magnification of the object?

A 0.33 B 3.0 C 4.0 D 6.0

5054/12/O/N/12/Q24

Which statement about red light and blue light is correct?

A Red light has a higher frequency than blue light.

B Red light has a longer wavelength than blue light.

C Red light has the same speed in glass as blue light.

D Red light is refracted by a glass prism more than blue light.

5054/12/O/N/12/Q25

Which diagram represents the reflection of light along an optical fibre?

A B C D

5054/11/O/N/13/Q20

67 The diagram shows rays of light.

X

What is in the space labelled X?

A a converging lens

B a diverging lens

C a plane mirror

D a rectangular glass block

5054/11/O/N/13/Q21

A ray of red light from a laser passes into a semi-circular glass block.

M glass block

What is shown at M?

A dispersion

B rarefaction

C reflection

D refraction 5054/12/O/N/13/Q23

69 A ray of light strikes the surface of a glass block at an angle of incidence of 45°.

The refractive index of the glass is 1.8.

What is the angle of refraction inside the block?

A 23° B 25° C 45° D 81°

5054/12/O/N/13/Q24

70 A shoe shop puts a mirror on the wall so that customers can look at their shoes.

The length of the mirror is 50 cm. A customer has eyes 150 cm above ground level.

150 cm 50 cm h mirror

The bottom of the mirror is at height h above the ground.

What is the smallest value of h that allows the customer to see an image of his shoes in the mirror?

A B 25 cm C 50 cm D 75 cm

5054/11/O/N/14/Q20

The diagram shows light travelling through a medium. The light reaches the boundary with a vacuum as shown. The light emerges travelling along the surface.

60° medium vacuum

What is the refractive index of the medium?

A ° ° sin sin B ° ° sin sin C ° ° sin sin D ° ° sin sin

5054/11/O/N/14/Q21

72 The diagram shows an object on the principal axis of a converging (convex) lens. A principal focus of the lens is at F.

O Q F lens object principal axis

Where is the image formed by the lens?

A between O and F

B between F and Q

C at Q

D to the right of Q 5054/11/O/N/14/Q22

A digital camera uses a lens to produce a diminished (reduced in size) image on a light sensor.

Which row shows the correct type of lens and the nature of the image?

type of lens nature of image

A converging inverted

B converging upright

C diverging inverted

D diverging upright

5054/11/O/N/14/Q23

A plastic tube is immersed in a liquid of refractive index 1.4. Light travelling in the plastic tube strikes the inside surface at an angle of incidence of 70°. The light undergoes total internal reflection.

light reflected ray 70° plastic tube liquid of refractive index 1.4

What describes the values of the critical angle in the plastic and the refractive index of the plastic?

critical angle in plastic refractive index of plastic

A greater than 70° greater than 1.4

B greater than 70° less than 1.4

C less than 70° greater than 1.4

D less than 70° less than 1.4

5054/12/O/N/14/Q16

Which statement about red light and blue light is correct?

A Red light has a higher frequency than blue light.

B Red light has a longer wavelength than blue light.

C Red light has the same speed in glass as blue light.

D Red light is refracted by a glass prism more than blue light. 5054/11/O/N/15/Q20

76 A ray of light in a transparent medium of refractive index 1.8 is incident on the surface as shown. The light enters air.

30°

60° air medium

What is the angle between the refracted ray and the normal in air?

A 29° B 33° C 54° D 64°

5054/11/O/N/15/Q21

77 An object is viewed through a converging lens.

The diagram shows the paths of two rays from the top of the object to an eye.

object thin lens eye

How does the image compare with the object?

A It is larger and inverted.

B It is larger and upright.

C It is smaller and inverted.

D It is smaller and upright.

5054/12/O/N/15/Q22

78 The angle of incidence of ray OP on the plane mirror MN is 40°.

normal

O

M N

40°

10° P

The mirror is rotated through 10°, as shown by the dashed line. The direction of the incident ray OP does not change.

What is the new angle of incidence?

A

30°

B

40°

C

50°

D

60°

5054/11/O/N/16/Q23

A ray of light is incident on the surface of a glass block. The diagram is not drawn to scale.

The refractive index of the glass is 1.5.

36° d r path light takes without the glass block normal incident ray air glass

The angle of refraction is r. The angle between the refracted ray and the path the light takes without the glass block is d.

What are r and d ?

r / ° d / °

A B C D

5054/11/O/N/16/Q24

80 In the diagram, a convex lens forms an image I of an object O. The diagram is not drawn to scale.

O

I

45 cm 20 cm 16 cm

What is the focal length of the lens?

A

16 cm

B

20 cm

C

36 cm

D

45 cm

5054/11/O/N/16/Q25

A lens is used to produce a magnified image, as shown in the scale diagram.

object image

What is the linear magnification produced by the lens?

A

0.33

B

3.0

C

4.0

D

6.0 5054/11/O/N/16/Q26

82 Blue and yellow are colours in the visible spectrum.

Which colour has the lower frequency and which colour has the longer wavelength?

lower frequency longer wavelength

A

blue blue

B

blue yellow

C

yellow blue

D

yellow yellow

5054/11/O/N/16/Q27

What is the name and shape of the lens used to correct short sight?

name of lens shape of lens

A

converging

B

converging

C

diverging

D

diverging

5054/11/O/N/17/Q21

84 An object is placed in front of a converging lens. The lens forms a magnified image of the object on a screen.

Which statement is correct?

A

The distance between the object and the lens is greater than the focal length.

B

The image formed is a virtual image.

C

The image is the right way up.

D

The lens is acting as a magnifying glass. 5054/11/O/N/17/Q22

85 Which diagram shows reflection by a plane mirror?

mirror

A B C D

5054/12/O/N/17/Q20

Light is incident on a plastic block of refractive index 1.5.

The angle of incidence is 50°.

What is the angle of refraction?

A

31°

B

33°

C

40°

D

75°

5054/12/O/N/17/Q21

A solid plastic cylinder is immersed in a liquid of refractive index 1.4. Light travelling in the plastic cylinder strikes the inside surface at an angle of incidence of 70°. The light undergoes total internal reflection.

light reflected ray 70° plastic cylinder liquid of refractive index 1.4

What are the values of the critical angle in the plastic and the refractive index of the plastic?

critical angle in plastic refractive index of plastic

A

greater than 70° greater than 1.4

B

greater than 70° less than 1.4

C

less than 70° greater than 1.4

D

less than 70° less than 1.4 5054/12/O/N/17/Q22

88 The ray diagrams, X and Y, show two ways in which a thin converging lens produces an image that is larger than the object.

image image object object thin converging lens thin converging lens

X Y

Which devices use a lens as shown in diagram X and in diagram Y?

X Y

A

camera magnifying glass

B

magnifying glass projector

C

photographic enlarger camera

D

photographic enlarger projector

5054/12/O/N/17/Q23

89 White light is dispersed by a prism. Compared with blue light, the red light is

A

slowed down less and refracted less.

B

slowed down less and refracted more.

C

slowed down more and refracted less.

D

slowed down more and refracted more. 5054/11/O/N/18/Q20

The diagram shows a thin converging lens of focal length f.

Where must an object be placed to produce a real image in the position shown?

A B C D

f f image

5054/12/O/N/18/Q23

A student reads the following in her physics book.

‘The incident angle is greater than 42° which is the critical angle for glass in air.’

What is the student reading about?

A

focal length of a glass lens

B

reflection in a plane mirror

C

refraction as light enters glass

D

total internal reflection

5054/12/O/N/18/Q25

The diagram shows a ray of light in liquid incident on the boundary with air. Two other rays are observed. One is in the liquid and the other is in the air on the boundary.

air liquid incident ray ray in liquid ray on boundary

50°

What is the angle of refraction?

A

0°

B

40°

C

50°

D

90°

5054/11/O/N/19/Q26

93 Light is incident at 90° on the surfaces of two glass prisms P and Q.

45°

45° glass prism Q light light

5054/11/O/N/19/Q27 glass prism P

The critical angle for light travelling from glass into air is 42°.

Where does total internal reflection occur?

A

in P and in Q

B

in P only

C

in Q only

D

in neither P nor Q

An object O is placed in front of a plane mirror. I is the image formed.

mirror top top

O I

X

A ray from the top of the object is incident on the mirror at X.

What happens to this ray?

A It reflects and passes through the bottom of O.

B It reflects and passes through the top of O.

C It reflects as though it came from the bottom of I.

D It reflects as though it came from the top of I. 5054/12/O/N/19/Q24

95 The diagram shows light passing from glass into air.

P air glass ray of light

What is the name of angle P?

A

the angle of incidence

B

the angle of reflection

C

the angle of refraction

D

the critical angle

5054/12/O/N/19/Q25

An object is placed in front of a converging lens of focal length 4.0 cm. The height of the image is

6.0 cm.

The arrangement is shown on the scale diagram.

lens object image

What is the linear magnification produced by the lens?

A

0.50

B

1.5

C

2.0

D

6.0

5054/12/O/N/19/Q26

Three objects P, Q and R are placed in front of a plane mirror.

P Q R student’s eye

The student’s eye is positioned as shown.

Which of the images of P, Q and R can the student see in the mirror?

P Q R

A

key

B

= can see

C

= cannot see

D

5054/11/O/N/20/Q27

A ray of light R is incident on a water-to-air surface with an angle of incidence .

The angle  is less than the critical angle c.

air water

R

θ

Which statement describes the subsequent path of R?

A

It travels back into the water with an angle of reflection equal to c.

B

It travels back into the water with an angle of reflection greater than c.

C

It travels into air with an angle of refraction greater than .

D

It travels into air with an angle of refraction smaller than . 5054/11/O/N/20/Q28

F

F is one focal point of the lens.

Which ray diagram shows the light after it has passed through the lens?

F

A

F

B

F

C

F

D

5054/11/O/N/20/Q29

A parallel beam of light is incident on a thin converging lens.

thin converging lens

A plane mirror on a vertical wall forms an image of an object placed in front of it.

Which characteristics describe the image?

A

real, inverted and smaller than the object

B

real, upright and the same size as the object

C

virtual, upright and smaller than the object

D

virtual, upright and the same size as the object

5054/12/O/N/20/Q23

A ray of light passes into a glass block. It travels through the glass block and then emerges into the air.

Which angle is the angle of refraction at the surface XY?

B A C D

air glass

X Y

5054/11/O/N/21/Q20

Two rays of light pass through a lens in region X.

object

X

Which type of lens is in region X and which type of image is formed?

type of image type of lens

A

real converging

B

virtual converging

C

real diverging

D

virtual diverging

5054/11/O/N/21/Q21

A girl is long-sighted.

Which statement is correct?

A

She sees close objects less clearly than a person with normal vision.

B

She sees distant objects more clearly than a person with normal vision.

C

The fault is corrected with a diverging lens.

D

The image of a close object is formed in front of her retina.

5054/11/O/N/21/Q22

Light rays are deviated by a prism.

d

The deviation angle d is measured for light rays of different frequency, including blue light and red light.

Which graph of d against frequency is correct?

d blue red frequency

A

d blue red frequency

B

d red blue frequency

C

d red blue frequency

D

5054/11/O/N/21/Q23

Light reflects from a plane mirror as shown.

Y X source of light mirror

Which row is always correct?

symbol of angle X relationship between X and Y

A

i X = Y

B

i X + Y = 90

C

r X = Y

D

r X + Y = 90

5054/12/O/N/21/Q23

A piece of paper torn from an exercise book is shown.

The object is further away from the lens The object is further away from the lens than the focal point and the image is

than the focal point and the image is upside down.

upside down.

Which process is being described?

A

the formation of a virtual image by a diverging lens

B

the formation of a virtual image by a converging lens

C

the formation of a real image by a diverging lens

D

the formation of a real image by a converging lens

5054/12/O/N/21/Q24