Practice test

Oscillation and waves - Test Set 2

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Tape recorder should not be kept near one of the following things:
    1. Clock
    2. Magnet
    3. Electrical switchboard
    4. Radio
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  2. Question 2

    Night photography and photography in mist and fog are possible using:
    1. Ultra-violet radiation
    2. Infra-red radiation
    3. Microwave radiation
    4. Gamma radiation
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  3. Question 3

    Forged documents are detected by:
    1. Ultraviolet rays
    2. Infra-red rays
    3. Beta rays
    4. Gamma rays
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  4. Question 4

    In the remote control of television, electromagnetic waves used are:
    1. Ultraviolet
    2. Microwave
    3. Radiowave
    4. Infrared
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  5. Question 5

    Which of the following radiations has the least wavelength?
    1. X-rays
    2. α-rays
    3. γ-rays
    4. β-rays
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  6. Question 6

    When a stone is thrown in calm water of a pond, waves produced are:
    1. Longitudinal wave
    2. Transverse wave
    3. Both A and B
    4. Wave does not Produced
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  7. Question 7

    Which instrument can be used to study the wave form of a signal?
    1. Spectrometer
    2. Oscilloscope
    3. Sonometer
    4. P-n Junction diode
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  8. Question 8

    What is found in frequency modulation?
    1. Fixed frequency
    2. Fixed dimension
    3. Change in frequency and dimension
    4. Change in dimension only
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  9. Question 9

    These waves cannot be transmitted through vacuum:
    1. Light
    2. Sound
    3. Heat
    4. Electromagnetic
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  10. Question 10

    Stationary wave is formed by:
    1. A transverse wave superposing a longitudinal wave
    2. Two waves of the same speed superposing
    3. Two waves of same frequency travelling in the same direction
    4. Two waves of same frequency travelling in the opposite direction
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  11. Question 11

    Intensity of any wave is proportional to which of the following?
    1. Amplitude
    2. Square of amplitude
    3. Square root of amplitude
    4. Cube of amplitude
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  12. Question 12

    The reverse effect of X-ray emission is:
    1. Raman Effect
    2. Compton Effect
    3. Zeeman Effect
    4. Photoelectric Effect
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  13. Question 13

    Which of the following waves cannot be polarized?
    1. Radio
    2. Ultraviolet
    3. Infrared
    4. Ultrasonic
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  14. Question 14

    Which one of the following is not an electromagnetic wave?
    1. X-ray
    2. Gamma-ray
    3. Cathode Ray
    4. Infrared
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  15. Question 15

    Which of the following has the lowest frequency?
    1. Visible Ray
    2. Gamma Ray
    3. X-Ray
    4. Ultraviolet Rays
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  16. Question 16

    Every hot object emits:
    1. X-rays
    2. Visible light
    3. Infrared Rays
    4. Ultraviolet Rays
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  17. Question 17

    Which of the following is not true about X-rays?
    1. Have low penetrating power
    2. Travel with the speed of light
    3. Can be reflected or refracted
    4. Can affect photographic plates.
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  18. Question 18

    Which of the following electromagnetic waves has the longest wavelength?
    1. Infrared Rays
    2. Gamma Rays
    3. Light Rays
    4. Ultraviolet Rays
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  19. Question 19

    Which of the following has the smallest wavelength?
    1. Gamma Rays
    2. Ultraviolet Rays
    3. Infrared Rays
    4. X-Rays
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  20. Question 20

    Which of the following is used to detect forgery in currency notes?
    1. Ultraviolet Rays
    2. Infrared Rays
    3. Radio Waves
    4. X-Rays
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