Sound & Acoustics MCQs with Answers

The speed of sound is different in different medium. Which of the following is the approximate speed of sound in water?

• A.330 m/s
• B.1500 m/s
• C.5000 m/s
• D.300 m/s

A tuning fork having angular frequency equal 440 Hz produces sound waves which travel with the speed of 340 m/s. What is the separation between a compression and the adjacent rarefaction of the sound waves?

• A.0.39 m
• B.1.54 m
• C.0.77 m
• D.0.19 m

Unit of loudness is?

• A.Hertz
• B.Decibel
• C.Watt
• D.Pascal

One complete round trip of a vibrating body is called ?

• A.Vibration
• B.Oscillation
• C.Amplitude
• D.Frequency

Past Paper MCQ

Loud speaker voice is increased due to _?

• A.High frequency
• B.High amplitude
• C.Low wavelength
• D.High pitch

The distance between two successive particles which are exactly in the same state of vibration is called?

• A.Time period
• B.Frequency
• C.Amplitude
• D.Wavelength

The speed of sound is the speed of light.

• A.Sometimes greater, sometimes less than
• B.Greater than
• C.Equal to
• D.Less than

Which waves cause the candle flame to flicker?

• A.Light waves
• B.Sound waves
• C.Heat waves
• D.Electromagnetic waves

The waves produced by oscillation of material particles are _?

• A.Electromagnetic waves
• B.Matter waves
• C.Mechanical waves
• D.Radio waves

When sound waves move from one medium to another, which quantity remains the same?

• A.Frequency
• B.Wavelength
• C.Velocity
• D.Amplitude