Waves Test - 8...

Two strings A and B are slightly out tune and produces beats of frequency 5 Hz. Increasing the tension in B, reduces the beat frequency to 3 Hz. If the frequency of string A is 450 Hz, calculate the frequency of string B.

Two vibrating tuning forks produce progressive waves given by y₁ = 4 sin 500πt and y₂ = 2sin 506πt. Number of beats produced per minute is

Three sound waves of equal amplitudes have frequencies (v –1), v, (v + 1). They superimpose to give beat. The number of beats produced per second will be

A tuning fork produces 4 beats/s when sounded with a sonometer wire of vibrating length 48 cm. It produces 4 beats/s also when the vibrating length is 50 cm. What is the frequency of the tuning fork?

Find beat frequency? Motion of two particles is given by y₁ = 0.25 sin (310t) and y₂ = 0.25 sin (316t)

Two waves of wavelength 1.00 m and 1.01 m produces 10 beats in 3 s. What is the velocity of the wave?

Choose the correct statement.

Three sources of equal intensities with frequencies 400, 401 and 402 vib/s are sounded together. The number of beats is

A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s.

A whistle whose air column is open at both ends, has fundamental frequency of 5100 Hz. If the speed of sound in air is 340 ms ^-1, the length of the whistle in cm, is