Sound & Acoustics MCQs with Answers

The audible range of normal dog ear is ?

• A.10 Hz to 100 kHz
• B.20 Hz to 20 kHz
• C.67 Hz to 45 kHz
• D.50 Hz to 30 kHz

Sound cannot travel through ?

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

To hear a clear echo, the reflecting surface should be at least how much away from the source of sound?

• A.10 metre
• B.17 metre
• C.25 metre
• D.34 metre

If atmospheric pressure is doubled, what happens to the speed of sound?

• A.It doubles
• B.It becomes half
• C.Remains constant
• D.It becomes four times

The fundamental frequency of a guitar string is 220 Hz, the frequency of the second harmonic is?

• A.110 Hz
• B.220 Hz
• C.440 Hz
• D.660 Hz

Which of the following cannot be polarized?

• A.Light waves
• B.Radio waves
• C.Ultrasonic waves
• D.Microwaves

Sound waves are described by which of the following parameters?

• A.Amplitude, wavelength and frequency
• B.Amplitude, speed and density
• C.Wavelength, pressure and intensity
• D.Frequency, velocity and phase

Past Paper MCQ

Radio, television and cell phones send information even in space agency through:

• A.Mechanical waves
• B.Sound waves
• C.Water waves
• D.Electromagnetic waves signals

Mechanical waves are?

• A.Transverse only
• B.Longitudinal only
• C.Transverse and Longitudinal
• D.Electromagnetic only

For sending sound waves at large distance, which waves are used?

• A.Radio waves
• B.Microwaves
• C.Ultrasonic waves
• D.Infrared waves