Free Printable Light

Worksheets

Light

Total questions: 40

Worksheet time: 51mins

Name

Class

Date

Diagram shows images of birds appear in water. Images of birds appear due to

Refraction

Difraction

Reflection

Total internal reflection

Diagram 18 shows position of man, table and vase in front of a plane mirror. What is the distance of table’s image as seen by man?

2 m

4 m

5 m

8 m

Diagram shows the formation of image in human eye. Which light phenomenon explains this situation?

Inversion

Refraction

Diffraction

Convergence

Diagram shows two cars, P and Q, travelling in the opposite directions, passing through a sharp bend. Which mirror is the most suitable to be placed at X so that the driver in car P can see car Q?

Diagram shows a ray of light passing into a glass block. The refractive index of the glass is 1.54. What is the angle of incidence?

19.7°

33.7°

54.7°

58.0°

Diagram shows the position of a girl, a cat and a plane mirror. What is the distance, in m, between the cat and the image of the girl?

The speed of light in medium X is 75% of its speed in air. What is the refractive index of medium X?

1.75

1.33

1.25

1.00

Which equipment uses total internal reflection?

Binocular

Telescope

Microscope

Slide projector

Diagram shows an object in front of a convex lens. What is the image distance?

15 cm

20 cm

25 cm

30 cm

10.

Which tiger is unhealthy?

11.

Diagram shows an incident ray of light directed to a plain mirror, PQ with i = 50^o . What is reflection angle if the plain mirror is rotate as in the diagram.

20^o

30^o

50^o

70^o

12.

A fish is seen at a depth of 1.4 m from the surface of water in an aquarium. What is the real depth of the fish? [Refractive index of water = 1.33]

0.95 m

1.86 m

1.92 m

2.00 m

13.

Diagram 15.1 shows a ray of light passing from medium X to medium Y while Diagram 15 .2 shows a ray of light passing from medium X to medium Z. Arrange the optical density for the medium in ascending order.

Z, X, Y

Y, X, Z

Z, Y, X

X, Y, Z

14.

Diagram shows an object placed at O, in front of a concave mirror. F is the focal point and C is the center of curvature of the mirror. What the characteristics of the image formed?

Virtual and smaller than the object.

Real and smaller than the object.

Virtual and bigger than the object.

Real and bigger than the object.

15.

Diagram shows two light rays passing into a glass block. Which relationship is correct?

$\frac{p}{r}=\frac{q}{s}$

$\frac{\sin\ p}{\sin\ r}=\frac{\sin\ q}{\sin\ s}$

$\sin\ \frac{p}{r}\ =\sin\ \frac{q}{s}$

$\sin\ p\ \times\ \sin\ r\ =\sin\ q\times\sin\ s$

16.

Diagram shows an image in mirror X. What is the type of mirror X?

Plane mirror

Convex mirror

Concave mirror

17.

Diagram shows an object placed in front of a convex mirror. Which of the following is correct about the characteristics of the image produced?

Magnified, inverted and real

Magnified, upright and virtual

Diminished, upright and virtual

Diminished, inverted and real

18.

Diagram shows a light ray is travelling from air to water. What is the speed of air in water?

(Given speed of light in air is 3.0 x 10⁸ ms^-1 )

4.23 x 10⁸ ms^-1

2.13 x 10⁸ ms^-1

4.70 x 10⁷ ms^-1

2.36 x 10⁷ ms^-1

19.

Diagram shows a light ray travels through three mediums P, Q and R of different optical densities. Which of the following is correct?

Optical density=P < Q < R , The magnitude of critical angle= 70^o

Optical density= P > Q > R , The magnitude of critical angle= 22^o

Optical density= P > Q < R , The magnitude of critical angle= 70^o

Optical density=P < Q > R , The magnitude of critical angle= 22^o

20.

Which flag is refer to 1st Sarawak Kingdom.

21.

Diagram shows the optometrist chart view through a spectacle. Which type of lens is used for the spectacle and at which position the object is placed?

Type of lens= Convex , Position of object= ,2f > u > f

Type of lens= Concave , Position of object= 2f > u > f ,

Type of lens=Convex , Position of object= u < f ,

Type of lens= Concave , Position of object= u < f ,

22.

An eye views an object O by its reflection in a plane mirror. Which of the following is the correct ray diagram?

23.

Diagram shows a light ray incident into a glass prism. The refractive index of the prism is 1.5. Calculate the critical angle of the glass prism.

33.7°

41.8°

45.0°

48.2°

24.

Which of the following ray diagrams is correct?

F : Focal point

25.

Diagram shows a path of light ray passing through a convex lens. Which refracted ray is correct?

26.

Diagram shows a light ray, P is directed to the centre, O of semicircular glass block. Refractive index of the glass is 1.57. At which direction A, B, C or D does the light propagate after point O?

27.

Which of the following statement is true about the telescope?

The objective lens and eyepiece are concave lens

Power of objective lens < power of eyepiece

Normal adjustment > focal length of eyepiece + focal length of objective lens

Normal adjustment < focal length of eyepiece + focal length of objective lens

28.

Which phenomenon produces an image on a plane minor?

Reflection

Refraction

Diffraction

lnterference

29.

Diagram shows the path of light travelling from a glass block to air. The refractive,indax of the glass block is

$\frac{1}{\sin\ 42}$

$\frac{\sin\ 42}{\sin\ 90}$

$\frac{1}{\sin\ 48}$

$\frac{\sin\ 48}{\sin\ 90}$

30.

What image can you see?

Dragonfly

Butterfly

Flies

Bird

31.

Diagram shows an object placed at a distance, x from a convex lens with a focal length, f. The image formed is virtual and enlarged. The object is at

x > 2f

x = 2f

x < f

f < x < 2f

32.

Which of the following pairs of lenses can be used lo construct a telescope?

Two concave lenses with focal lengths of 6 cm and 9 cm.

Two convex lenses with focal lengths of 10 cm and 80 cm.

Two concave lenses with focal lengths of 10 cm and 80 cm.

Two convex lenses with focal lengths of 6 cm and 9 cm.

33.

Which diagram of the following shows total internal reflection?

34.

Diagram shows a glass of water being placed in front of a piece of black and white paper. This situation explains the phenomenon of

Reflection of light

Refraction of light

Diffraction of light

Interference of light

35.

Diagram shows the path of a light ray that passed through two mediums of refractive index n₁ and n_2.Which pair produces total internal reflection?

i = c, n₁> n₂

i > c, n_{1 <} n₂

i < c, n_{1 <} n₂

i > c, n_{1 >} n₂

36.

An object with a height of 3 cm is placed 15 cm from a convex lens. A sharp image is formed on the screen, 30 cm from the convex lens. What is the height of the image?

0.5 cm

1.5 cm

2.0 cm

6.0 cm

37.