Practice MCQs For Waves, Light, Lens & Sound

This quiz contains practice questions for GCE ‘O’ level topics: General Waves Properties, Reflection and Refraction Of Light, Converging Lens, Electromagnetic spectrum, Sound. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

The quiz comprises of 10 questions, which are randomly selected from a large pool of questions. After completion, you can refresh the page and try the quiz again for a new set of 10 questions.

Back To O Level Physics

Back To List of O Level Physics Quiz

Enter email to receive results:

1. What happens to light as it passes from glass into air?

Its wavelength increases because its speed increases.

Its frequency decreases because its speed decreases.

Its wavelength decreases because its speed decreases.

Its frequency increases because its speed increases.

2. The distance between a compression and rarefaction in a sound wave is 0.15 m. The period of the sound wave is 0.20 milliseconds. The speed of the sound is ___________.

3300 m/s

330 m/s

1500 m/s

750 m/s

3. Which of the following is a possible unit for wavelength?

coulomb

kilometer

hertz

metre per second

4. The diagram shows an object O placed 3 cm away from a converging lens of focal length 6 cm.

What type of image is produced?

Virtual, erect and magnified

Real, erect and diminished

Real, inverted and magnified

Virtual, inverted and diminished

5. Which of the following is the speed of a transverse wave?

$\frac{\text{wavelength}}{\text{Time taken for a wave to travel from one point to another}}$

The speed of the compression

The speed of a particle on the wave

The speed of the crest

6. We can hear sound when a ball strikes the floor because ___________.

the air particles from the floor flowed into our ears.

the wavelength of the sound wave is large enough to produce the sound.

the air particles from the floor vibrate and produce transverse waves to flow through the air into our ears.

the air particles from the floor vibrate and produce longitudinal waves to flow through the air into our ears.

7. Which does not normally use infra-red radiation?

sunbed

electric grill

intruder alarm

television remote controller

8. Which statement is true for all electromagnetic waves?

They travel at the same speed in a vacuum.

They have the same frequency in air.

They can be seen.

They are longitudinal.

9. A flash of lightning and the corresponding thunder clap are detected 6 s apart. It is calculated that the lightning struck about 1800 m away.

On which assumption is the calculation based?

The sound of the thunder was emitted 6 s after the flash

Sound reaches us almost instantaneously, but light travels at $300 \text{ ms}^{-1}$

Light reaches us almost instantaneously, but sound travels at $300 \text{ ms}^{-1}$

Light travels $300 \text{ ms}^{-1}$ faster than sound

10. A fish in a pond looks up at a man standing beside the pond. To the fish, the man appears _________.

Larger and nearer than he actually is.

Larger and further than he actually is.

Smaller and further than he actually is.

Smaller and nearer than he is actually is.

 Loading...

 

Back To O Level Physics

Back To List of O Level Physics Quiz