S.3 Physics Exercise 1 – Light, colours and beyond
Name : _______________________ (
)
A True or false questions
Write ‘T’ for a true statement and ‘F’ for a false statement in the boxes provided.
1
2
The Moon is a luminous object because our eyes receive light from it.
For the shadow of an object cast (投射) by a lamp on a wall, we can make

the shadow larger by moving the object closer to the lamp.

B Multiple-choice questions
Choose the correct answer for each of the following questions.
1
Which of the following statements about light is INCORRECT?
A
Light travels at a very high speed of about 300 000 000 m/s in air.
B
Light cannot travel through a vacuum.
C
Light travels in straight lines.
D
Light is a form of energy.


C Fill in the blanks
Complete the following sentences.
1
The light beam given out by the torch below can be classified according to its shape as a
____________________ beam.
D Questions
*1
A projector screen is showing a bright image. ‘The screen is very bright. It is a luminous
object,’ says Jane. Do you agree with Jane? Explain briefly.
(2 marks)
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– End –
Unit 15 Light, colours and beyond
Section test 1: Sections 15.1 to 15.3
A True or false questions
1 F
2 T
B Multiple-choice questions
1 B
2 D
C
1
Fill in the blanks (8 marks, 2 marks each)
divergent
D
1
Questions (10 marks)
No.
1m
The screen does not give out light of its own. It is bright because it reflects
light coming from the projector.
1m