Key Stage 2 (KS2) · Science

Light: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Light.

10 questions22 marksFree, no account

Question 1

1 mark

Which of the following is a primary source of light?

Question 2

1 mark

A student places a small object between two plane mirrors that are fixed at an angle of \(90^{\circ}\) to each other. How many images of the object can the student see in total within the mirrors?

Question 3

1 mark

A ray of light strikes a plane mirror at an angle of incidence of \(35^{\circ}\). If the mirror is then rotated by \(10^{\circ}\) around the point of incidence in a direction that increases the angle of incidence, what is the new angle between the incident ray and the reflected ray?

Question 4

1 mark

In a dark room, if you shine a torch on a solid wooden block, what is formed on the wall behind the block?

Question 5

1 mark

If the distance between a light source and an opaque object is doubled, while the screen remains in the same place, what happens to the area of the shadow cast on the screen?

Question 6

2 marks

When light hits a smooth, shiny surface like a mirror, it bounces off. What is the name of this process?

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Question 7

3 marks

Explain why we can see a non-luminous object, such as a book, even though it does not produce its own light.

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Question 8

3 marks

Why do we see a flash of lightning before we hear the sound of thunder during a storm?

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Question 9

3 marks

Light
A student conducts an experiment with a flashlight and a mirror.
(a) State the Law of Reflection regarding the angle of incidence and the angle of reflection.
(b) If a ray of light hits a mirror at an angle of \(25^{\circ}\) to the normal, what is the angle of reflection?
(c) Explain the difference between a translucent material and a transparent material in terms of how much light passes through.

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Question 10

6 marks

Light
A student investigates how light travels and interacts with different surfaces. They use a laser pointer and a series of mirrors and blocks.

(a) The student shines the laser at a plane mirror. If the angle between the incident ray and the mirror surface is \(30^{\circ}\), what is the angle of reflection? (Hint: The angle is measured from the normal).
(b) The student then places a block of glass in the path of the light. The light appears to bend as it enters the glass. Name this process and explain why it happens.
(c) If the student replaces the glass with a piece of black felt, what happens to the light? Use the term absorption.

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