The speed of sound in air at 0°C is approximately:

In a closed organ pipe, the fundamental frequency corresponds to:

Beats are produced when two waves have:

The Doppler effect causes apparent frequency to increase when:

Velocity of transverse wave on a string is:

In a stationary wave, the distance between a node and adjacent antinode is:

The intensity of a sound wave is proportional to:

Ultrasonic waves are sound waves with frequency:

An open organ pipe of length L has fundamental frequency:

The equation of a progressive wave is y = A sin(ωt − kx). Its velocity is:

Resonance in a vibrating system occurs when driving frequency equals:

The speed of sound is maximum in:

Superposition of two identical waves travelling in opposite directions produces:

The phenomenon of increase in loudness of sound at particular frequencies is called:

For a string fixed at both ends, the number of harmonics is:

Loudness of sound is measured in:

Kundt's tube is used to determine:

The fundamental frequency of a closed pipe is f. Its first overtone frequency is:

The quality of musical sound depends on:

In the Doppler effect for sound, if both source and observer move toward each other: