A transverse progressive wave on a stretched string has a velocity of 10 ms–1 and a frequency of 100 Hz. The phase difference between two particles of the string which are 2.5 cm apart will be
In stationary waves, antinodes are the points where there is
The equation y = 0.15 sin 5x cos 300 t, describes a stationary wave. The wavelength of the stationary wave is
The equation of a stationary wave is y = 0.8 cos(πx/20)sin 200πt where x is in cm. and t is in sec. The separation between consecutive nodes will be
Which of the property makes difference between progressive and stationary waves
If amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be
If two waves of same frequency and same amplitude respectively on superimposition produced a resultant disturbance of the same amplitude the wave differ in phase by
A man is watching two trains, one leaving and the other coming in with equal speed of 4 m/s. If they sound their whistles, each of frequency 240 Hz, the number of beats heard by the man (velocity of sound in air = 320 m/s) will be equal to
At what speed should a source of sound move so that observer finds the apparent frequency equal to half of the original frequency
A particle which has zero rest mass and nonzero energy and momentum must travel with a speed -
Two strings of copper are stretched to the same tension. If their cross-section area are in the ratio 1 : 4, then the respective wave velocities will be -
In frequency of the wave is -
When sound wave is refracted from air to water, which of the following will remain unchanged?
The frequency of a man’s voice is 300 Hz and its wavelength is 1 meter. If the wavelength of a child’s voice is 1.5 m, then the frequency of the child’s voice is:
Distance between successive compression and rarefaction is 1 m and velocity fo sound is 360 ms–1. Find frequency :
