Two vibrating tuning forks produce progressive waves given by y₁ = 4 sin 500 πt and y₂ = 2 sin 506 πt. 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:

A cylindrical resonance tube open at both ends, has a fundamental frequency ƒ, in air. If half of the length is dipped vertically in water, the fundamental frequency of the air column will be:

Standing waves are produced in a 10m long stretched string. If  the string vibrates in 5 segments and the wave velocity is 20 m/s, the frequency is:

Two waves are approaching each other with a velocity of 20 m/s and frequency n. The distance between two consecutive nodes is:

Two strings A and B have lengths l_A and l_B and carry masses M_A and M_B at their lower ends, the upper ends being supported by rigid supports. If n_A and n_B are the frequencies of their vibrations and n_A = 2n_B, then:

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 adn equal to 1 gm^-1. When both the strings vibrate simultaneously the number of beats will be:

Which one of the following statements is true?

A transverse wave is represented by the equation

For what value of λ is the maximum particle velocity equal to two times the wave velocity?

The phase difference between two waves, represented by

where x is expressed in metre and t is expressed in second, is approximately: