Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?

A. Isothermal law
B. Adiabatic law
C. Isochoric law
D. All of the above

When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?

A. Decreases
B. Increases
C. Remains unchanged
D. Becomes zero

If stretching force T of wire increases, then its frequency __________________?

A. Decreases
B. Increases
C. Remains the same
D. Any of above

It is possible to distinguish between transverse and longitudinal waves form the property of __________________?

A. Refraction
B. Polarization
C. Interference
D. Diffraction

Sound waves do not travel in vacuum because ___________________?

A. They are transverse waves
B. They are stationary waves
C. They require material medium for propagation
D. They do not have enough energy

Increase in velocity of sound in the air for 1°C rise in temperature is_________________?

A. 1.61 ms-1
B. 61.0 ms-1
C. 0.61 ms-1
D. 2.00 ms-1

On loading the prong of a tuning form with wax its frequency____________________?

A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease

The normal ear is the most sensitive in the frequency range___________________?

A. 20000 to 30000 hertz
B. 10 to 20 hertz
C. 2000 to 4000 hertz
D. 6000 to 8000 hertz

The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

A. 313°c
B. 586°c
C. 819°c
D. 1172°c

Silence zone takes place due to____________________?

A. Constructive interference
B. Destructive interference
C. Beats
D. Resonance