If A is the amplitude of the wave coming from a line source at a distance r, then :

IF A is the amplitude of the wave coming from a point source at distance r then

If the amplitude of a wave at a distance r from a point source is A , the amplitude at a distance 2 r will be

Calculate the ratio of slit width if the amplitudes of light waves coming from have a ratio of sqrt(3) : 1 .

If the amplitude of waves at a distance r from line source is A . The amplitude at a distance 4r will be

If the amplitude of waves at a distance r from line source is A . The amplitude at a distance 4r will be

As a spherical wavefront propagates, the amplitude (a) of a spherical wavefront varies with the distance r of the source

As a spherical wavefront propagates, the amplitude (a) of a spherical wavefront varies with the distance r of the source