A wave of frequency 100 Hz is sent along a string towards a fixed end. When this wave travels back after reflection, a node is formed at a distance of 10 cm from the fixed end of the string. The speed of incident ( and reflected) wave are:

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:

A star which is emitting radiation at a wavelength of 5000Å is approaching the earth with a velocity of 1.50 × 10⁶ m/s. The change in wavelength of the radiation as received on the earth is:

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are:

An observer moves towards a stationary source of sound with a speed th of the speed of sound. The wavelength and frequency of the source emitted are λ and ƒ respectively. The apparent frequency and wavelength recorded by the observer are respectively:

Equation of progressive wave is given by

Then which of the following is correct?

A stretched string resonates with tuning fork frequency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be:

The velocity of sound in any gas depends upon:

A plus of wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with :

A standing wave is represented by y = a sin (100t) cos(0.01)x, where y and a are in millimetre, t in second and x is in metre. Velocity of wave is: