Sound & Acoustics MCQs with Answers

Speed of sound is maximum in ?

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

Why can't astronauts talk to each other on the surface of the moon without using radios?

• A.Because the temperature on the moon is too low for sound to travel
• B.Because the moon's gravity is too weak for sound transmission
• C.Because the moon's surface absorbs all sound energy
• D.Because the moon has no atmosphere to carry sound waves

Past Paper MCQ

Women voice is loud to ?

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

We can hear sound around the corner but cannot see because of?

• A.Reflection
• B.Refraction
• C.Diffraction
• D.Polarization

The speed of sound is different in different medium. 1500 meters per second is the speed of sound in which of the following medium?

• A.Air
• B.Water
• C.Iron
• D.Vacuum

If a sound wave strikes a surface and returns back into the first medium, this phenomenon is called ?

• A.Reflection of sound
• B.Refraction of sound
• C.Diffraction of sound
• D.Absorption of sound

According to Laplace, sound travels in air as:

• A.Longitudinal wave motion
• B.Transverse wave motion
• C.Electromagnetic wave motion
• D.Both longitudinal and transverse wave motion

Which expression holds good for wave velocity?

• A.V = f × λ
• B.V = f / λ
• C.V = λ / f
• D.V = f + λ

The phenomenon of interference of sound waves requires ?

• A.Two coherent sources
• B.A single loud source
• C.Two sources of any frequency
• D.A vacuum medium

Which one of the following does not cause stationary waves?

• A.Two waves of unequal amplitude
• B.Two waves of same frequency traveling in opposite directions
• C.Superposition of incident and reflected waves
• D.Two waves of same wavelength traveling in opposite directions