Equations of two progressive waves are given by 

If amplitude and time period of resultant wave are same as that of both the waves, then 

The wave described by

where x and y are in metre and t in second, is a wave travelling along the

What is the effect of humidity on sound waves when humidity increases ?

The time of reverberation of a room A is one second.  What will be the time (in second) of reverberation of a room, having a the dimensions double of those of room A ?

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

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

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 

Velocity of sound waves in air is 330 m/s.  For a particular sound wave in air, path difference of 40 cm is equivalent to phase difference of 

The driver of a car travelling with speed 30 ms^-1 towards a hill sounds a horn of frequency 600 Hz.  If the velocity of sound in air is 330 ms^-1, the frequency of reflected sound as heard by driver is

In a sinusoidal wave, the time required for a particular point, to move from maximum displacement to zero displacement is 0.170 s.  The frequency of the wave is