Sound & Acoustics MCQs with Answers

According to World Health Organization (WHO), what is the industrial limit of sound in the industries?

• A.65 dB
• B.95 dB
• C.85 dB
• D.75 dB

The audible range of normal human ear is ?

• A.20 Hz to 20 kHz
• B.20 Hz to 20 MHz
• C.2 Hz to 2 kHz
• D.200 Hz to 200 kHz

Sound waves in the air are which type of waves?

• A.Transverse waves
• B.Electromagnetic waves
• C.Longitudinal waves
• D.Surface waves

The number of vibrations or oscillations made in one second is called the?

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

Past Paper MCQ

Sound waves travel faster in a medium which is:

• A.Vacuum
• B.Liquid
• C.Gas
• D.Solid

Longitudinal waves consist of?

• A.Nodes and antinodes
• B.Crests and troughs
• C.Electric and magnetic fields
• D.Compressions and rarefactions

Doppler's effect is applicable to _?

• A.Sound waves only
• B.Light waves only
• C.Both sound and light waves
• D.Neither sound nor light waves

Which is an alteration in the observed frequency of a sound due to motion of either the source or the observer?

• A.Refraction
• B.Diffraction
• C.Doppler effect
• D.Resonance

Sound travels in the form of waves called?

• A.Transverse waves
• B.Longitudinal waves
• C.Electromagnetic waves
• D.Surface waves

Which from the following is true for "Sound"?

• A.Sound travels fastest in a vacuum
• B.Sound travels at the same speed in all media
• C.Sound cannot travel through a vacuum
• D.Sound is an electromagnetic wave