Sound & Acoustics MCQs with Answers

What does ultrasound imaging primarily rely on to produce images?

• A.X-rays
• B.Radio waves
• C.Magnetic fields
• D.Sound waves

The speed of sound in aluminium is _?

• A.6420 m/s
• B.5120 m/s
• C.3300 m/s
• D.1500 m/s

Past Paper MCQ

In which of the following does the speed of sound travel at its minimum?

• A.Water
• B.Glass
• C.Steel
• D.Air

For longitudinal waves,

• A.The particles of the medium oscillate along the direction of the wave's propagation
• B.The particles of the medium oscillate perpendicular to the direction of the wave's propagation
• C.The particles of the medium do not oscillate at all
• D.The particles of the medium oscillate in circular paths

A region in a longitudinal wave where the particles are closest together is called?

• A.Trough
• B.Rarefaction
• C.Crest
• D.Compression

Sound waves travel in solvents in the form of _?

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

If the temperature of the medium is made 16 times its normal value, then the speed of the sound waves will increase by a factor of

• A.2
• B.4
• C.8
• D.16

The speed of sound in vacuum is?

• A.1500 m/s
• B.330 m/s
• C.3 × 10⁸ m/s
• D.0 m/s

Phase difference between a node and an antinode is _?

• A.0°
• B.90°
• C.180°
• D.270°

Microphone converts sound energy into _?

• A.Mechanical energy
• B.Heat energy
• C.Electrical signals
• D.Light energy