Practice test

Sound and acoustics - 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

    If a sound travels from air to water, the quantity that remain unchanged is
    1. Wavelength
    2. Velocity
    3. Frequency
    4. Amplitude
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    Ultrasonic waves can be detected by
    1. Telephone
    2. Quincke's tube
    3. Hebb's method
    4. Kundt's tube
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    The waves used in sonography are-
    1. Ultrasonic waves
    2. Sound waves
    3. Infra-red waves
    4. Micro waves
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    Echo is produced due to
    1. Resonance
    2. Reflection of sound
    3. Refraction of sound
    4. None of these
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    SONAR is based on the principle of
    1. Reverberation
    2. Resonance
    3. Echo
    4. None of these
    View explanation

    Sign In to See Explanations. Sign Up Here

  6. Question 6

    Instrument used to study the behaviour of a vibrating string is:
    1. Hydrometer
    2. Barometer
    3. Hygrometer
    4. Sonometer
    View explanation

    Sign In to See Explanations. Sign Up Here

  7. Question 7

    Sound travels fastest in
    1. Steel
    2. Air
    3. Water
    4. Vacuum
    View explanation

    Sign In to See Explanations. Sign Up Here

  8. Question 8

    Speed of sound in a gas is proportional to
    1. Isothermal elasticity
    2. Square root of isothermal elasticity
    3. Square root of adiabatic elasticity
    4. Adiabatic elasticity
    View explanation

    Sign In to See Explanations. Sign Up Here

  9. Question 9

    The Doppler’s effect is applicable for
    1. Light wave
    2. Sound wave
    3. Space wave
    4. Both (A) and (B)
    View explanation

    Sign In to See Explanations. Sign Up Here

  10. Question 10

    Which one of the following animals can hear ultrasonic sound?
    1. Rat
    2. Cat
    3. Bat
    4. Squirrel
    View explanation

    Sign In to See Explanations. Sign Up Here

  11. Question 11

    Submerged objects can be located using
    1. Sonar
    2. Radar
    3. Pulsar
    4. Quasar
    View explanation

    Sign In to See Explanations. Sign Up Here

  12. Question 12

    Velocity of sound in air does not change with the change of
    1. Temperature of air
    2. Pressure of air
    3. Moisture content in air
    4. Wind in the direction of propagation of sound
    View explanation

    Sign In to See Explanations. Sign Up Here

  13. Question 13

    Production of beats is a result of the phenomenon of
    1. Resonance
    2. Reflection
    3. Interference
    4. Superposition
    View explanation

    Sign In to See Explanations. Sign Up Here

  14. Question 14

    The reverberation of sound in a hall is due to continued
    1. reflection
    2. absorption
    3. diffraction
    4. interference
    View explanation

    Sign In to See Explanations. Sign Up Here

  15. Question 15

    The ratio of the velocity of a body to the velocity of sound is called
    1. Mach number
    2. Natural number
    3. Laplace number
    4. Magic number
    View explanation

    Sign In to See Explanations. Sign Up Here

  16. Question 16

    The approximate intensity level of sound in dB which can cause damage to the ear drum is
    1. 120dB
    2. 140 dB
    3. 160 dB
    4. 130 dB
    View explanation

    Sign In to See Explanations. Sign Up Here

  17. Question 17

    One important difference between light and sound is that the former
    1. Is a wave motion
    2. Can be reflected
    3. Can travel through space
    4. Can bend round corners
    View explanation

    Sign In to See Explanations. Sign Up Here

  18. Question 18

    Sound waves in air are
    1. Transverse
    2. Polarized
    3. Electromagnetic
    4. Longitudinal
    View explanation

    Sign In to See Explanations. Sign Up Here

  19. Question 19

    The speed of sound is faster in
    1. solids
    2. liquids
    3. gases
    4. vacuum
    View explanation

    Sign In to See Explanations. Sign Up Here

  20. Question 20

    Voice of your friend can be recognized by its
    1. pitch
    2. quality
    3. intensity
    4. velocity
    View explanation

    Sign In to See Explanations. Sign Up Here