JAC Class 11 Physics MCQ Chapter-14: Waves

1. A transverse wave consists of –

  • only crests
  • only trough
  • both crests and troughs
  • rarefactions and compressions
Answer
both crests and troughs

2. Sound waves travel fastest in –

  • Solid
  • liquids
  • Gases
  • Vacuum
Answer
Solid

3. With the propagation of longitudinal waves through a medium, the quantity transmitted is –

  • Matter
  • Energy
  • Energy and Matter
  • Energy, Matter, and Momentum.
Answer

4. Doppler’s effect in sound is due to-

  • Motion of source
  • Motion of observer
  • The relative motion of source and observer
  • None of these
Answer

5. Velocity of sound in a gas is independent of –

  • Temperature
  • Pressure of gas
  • Humidity
  • Nature of gas
Answer
Pressure of gas

 

6. The velocity of sound in any gas depends upon –

  • the wavelength of sound only
  • density and elasticity of gas
  • the intensity of sound waves
  • only amplitude and frequency of sound
Answer
density and elasticity of gas

 

7. If the length of a sonometer wire is increased, then its frequency -0

  • Increases
  • Decreases
  • Remains the same
  • None of these
Answer
Remains the same

 

8. Velocity of sound in a gaseous medium –

  • Increases with temperature
  • Decreases with temperature
  • Does not depend on the temperature
  • None of these.
Answer
Increases with temperature

9. In a wave motion the maximum displacement is called –

  • amplitude
  • wavelength
  • frequency
  • phase
Answer
amplitude

10. On increasing temperature the velocity of sound in a gas-

  • increases
  • decreases
  • remain unchanged
  • None of these
Answer
increases

11. On increasing pressure the velocity of sound in a gas –

  • increases
  • decreases
  • remain unchanged
  • None of these.
Answer
remain unchanged

12. In the air the velocity of sound depends upon –

  • the pressure of air
  • density of air
  • the temperature of the air
  • independent of temperature and pressure
Answer
density of air

13. Beats are the result of –

  • diffraction
  • destructive interference.
  • constructive interference
  • superposition of two waves of nearly equal frequencies
Answer
superposition of two waves of nearly equal frequencies

14. The velocity of sound waves in a medium depends on –

  • Frequency of the source
  • Physical properties of the medium
  • The amplitude of the source
  • None of these
Answer
Frequency of the source

These JAC MCQs for class 11 Physics will help students prepare for the board exam. For more study materials, such as solutions, model papers, syllabus, MCQ Questions, and the latest updates on the JAC Board, please visit our website at JACBoardSolutions.com.

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