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.

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1. Two notes are played on a guitar. The second note is louder and has a higher pitch. The second note is
2. Which of the following is/are longitudinal wave(s)?

A. The sound produced by a bat

B. The light from the Sun

C. The ripples on the surface of the water
3. Which of the following are always true for sound waves?

A. Sound waves are produced by vibration.

B. Sound waves are longitudinal waves.

C. Sound waves have an approximate speed of 300 m/s
4. The pitch of a sound is determined by its _________.
5. What is meant by the term wavefront?
6. The period of a wave is _____________.
7. Three rays of light are incident on the boundary between a glass block and air.

The angles of incidence are different.

possible critical angleWhat is a possible critical angle for light in the glass?
8. The diagram shows a water wave in a ripple tank.

The wave has a speed of 12 cm/s at R.

The wave crosses a boundary PQ where the distance between crests changes from 3.0 cm to 1.5 cm.

What is the velocity of the wave at point S?
9. The human eye has a converging lens system that produces an image at the back of the eye.

If the eye views a distant object, which type of image is produced?
10. 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?


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14 thoughts on “Practice MCQs For Waves, Light, Lens & Sound”

    • the answer is A because when the ball hit the floor , the particles of air hits the ball and the floor, this causes a longitudinal wave to be produced and this wave travels from where the ball hit the ground to our ears thus we hear it

      • Actually its wrong because particles do not move its just their vibration which transfers in form of longitudinal wave.

  1. I am unable to get a new set of MCQs. Even after refreshing the page I keep getting the same MCQs that I have already attempted

  2. I didn’t get the last MCQ. Like how can be waving your hand be a form of wave?
    And why can’t it be 1&4 because when you throw a stone, it would bang the window and would produce sound waves and shouting is also a kind of sound wave


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