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qUESTIONS

When a tuning fork produces sound waves in air, which one of the following is same in the material of tuning fork as well as in air

Two vibrating tuning forks produce progressive waves given by Y₁=4 sin 500πt. and Y2 = 2sin506πt. Number of beats produced per minute is

Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s We expect the following number of beats per second

Two waves of frequencies 20 Hz and 30 Hz. Travels out from a common point. The phase difference between them after 0.6 sec is.

A tuning fork vibrates with 2 beats in 0.04 second. The frequency of the fork is

A tuning fork whose frequency as given by manufacturer is 512 Hz is being tested with an accurate oscillator. It is found that the fork produces a beat of 2 Hz when oscillator reads 514 Hz but produces a beat of 6 Hz when oscillator reads 510 Hz. The actual frequency of fork is

Each of the two strings of length 51.6 cm and 49.1 cm are tensioned separately by 20 N force. Mass per unit length of both the strings is same and equal to 1 g/m. When both the strings vibrate simultaneously the number of beats is

“Stationary waves” are so called because in them

In stationary wave.

A standing wave in a pipe with a length L = 1.2m is described as y(x,t) = y0 sin [(2π/L)x]sin [(2π/L)x+π/4] Based on above information, which one of the following statement is incorrect. (Speed of sound in air is 300 ms-1)

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