Sound & Acoustics MCQs with Answers

Past Paper MCQ

Sound travels fastest in _?

• A.Air
• B.Water
• C.Diamond
• D.Vacuum

Past Paper MCQ

What is the speed of sound in air?

• A.1235 km/h
• B.1500 km/h
• C.1000 km/h
• D.900 km/h

Newton's original formula underestimated the speed of sound in air because he _?

• A.Assumed isothermal process
• B.Assumed adiabatic process
• C.Neglected the effect of humidity
• D.Used incorrect value of air density

The speed of sound is greater in solids due to their higher?

• A.Density
• B.Elasticity
• C.Temperature
• D.Hardness

Two tuning forks are sounded, one has a frequency of 250 Hz while the other has a frequency of 245 Hz. What is the frequency of the beats?

• A.5 Hz
• B.10 Hz
• C.495 Hz
• D.2.5 Hz

A standing wave ?

• A.Travels through a medium without any nodes or antinodes
• B.Can be constructed from two similar waves travelling in the same direction
• C.Is formed when a single wave reflects off a surface at an angle other than 90 degrees
• D.Can be constructed from two similar waves travelling in opposite directions

The velocity of sound is greatest in _?

• A.Air
• B.Water
• C.Metal
• D.Vacuum

The recorder records sound in the form of ?

• A.Electrical signals on the tape
• B.Magnetic field on the tape
• C.Sound waves on the tape
• D.Digital pulses on the tape

Why is a woman's voice typically shriller than a man's voice?

• A.Higher frequency
• B.Lower frequency
• C.Greater amplitude
• D.Higher speed of sound

The speed of sound in glass is less than ?

• A.Wood
• B.Water
• C.Air
• D.Iron