Match the statements in Column A with those in Column B. Column A Column B 1 . An optical medium which has different composition at different points (a) 3 × 10 8 m / s 2 . A body which does not allow light to pass through it. (b) Ray of light 3 . The speed of light (c) Luminous 4 . The path along which light energy travels in a given direction. (d) Opaque 5 . A body emitting light on its own. (e) Heterogeneous

An optical medium which has different composition at different points - Heterogenous An optical medium which has different composition at different points is called heterogeneous medium. A body which does not allow light to pass through it - opaque Those bodies which do not allow the light energy to pass through them are called opaque bodies. The speed of light - 3×10 8 m/s The speed of light is the distance light can travel in a unit of time through a given substance. The path along which light energy travels in a given direction - Ray of light The path along which light energy travels in a given direction is called a ray of light. A body emitting light on its own - Luminous All bodies which emit light energy by themselves are called luminous bodies. Column A Column B 1 . An optical medium which has different composition at different points (e) Heterogeneous 2 . A body which does not allow light to pass through it. (d) Opaque 3 . The speed of light (a) 3 × 10 8 m / s 4 . The path along which light energy travels in a given direction. (b) Ray of light 5 . A body emitting light on its own. (c) Luminous

EASY

Earn 100

You will be able to see most clearly through something that:

50% studentsanswered this correctly

Important Questions on Light, Shadows and Reflections

MEDIUM

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Which of the following objects allow light to pass through them?

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Luminous bodies:

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Does the flame of gas stove emit light? Explain.

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

List a few examples of opaque objects?

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Light refracts at the boundary of

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

An example of natural source of light is _____.

(Choose from the following: sun/glowing bulb)

MEDIUM

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Give two examples of non-luminous objects.

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Sometimes, you can see the Sun or the Moon behind the clouds. What can you say about the nature of clouds, regarding transmission of light?

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Objects which emit their own light are known as _____ objects.

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

State one way of making a non-luminous object to emit light.

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Coloured glass is an example of _____ material.

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Frosted glass is an example of _____ object.

(Choose from the following: transparent/ translucent)

EASY

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

The sun and stars are examples of _____ (luminous/ non-luminous) objects.

MEDIUM

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

A table is a transparent object.

MEDIUM

Science>Physics>Light, Shadows and Reflections>Transparent, Opaque and translucent Objects

Match the statements in Column A with those in Column B.

Column A	Column B
$1 .$ An optical medium which has different composition at different points	(a) $3 \times 10^{8} m / s$
$2 .$ A body which does not allow light to pass through it.	(b) Ray of light
$3 .$ The speed of light	(c) Luminous
$4 .$ The path along which light energy travels in a given direction.	(d) Opaque
$5 .$ A body emitting light on its own.	(e) Heterogeneous