Consider ten identical sources of sound. All giving the same frequency but having phase angles which are random.If the average intensity of each source is ` I_0 ` the average of resultant intensity I due to all these ten sources will be

Two coherent monochormatic light source are located at two vertices of an equilateral trangle. If the intensity due to each of the source independently is 1Wm^(-2) at the third vertex. The resultant intensity due to both the sources at that point (i.e at the third vertex) is (in Wm^(-2) )

Two coherent monochormatic light source are located at two vertices of an equilateral trangle. If the intensity due to each of the source independently is 1Wm^(-2) at the third vertex. The resultant intensity due to both the sources at that point (i.e at the third vertex) is (in Wm^(-2) )

There aree n identical sources and each of them is emitting light of intensity I_0 .Find the resultant intensity of light on interference,when the sources of light are incoherent.

A and B are two point sources of sound (of same frequency) and are kept at a separation. At a point P , the intensity of sound is observed to be I_(0) when only source A is put on. With only B on the intensity is observed to be 2I_(0) . The distance AP is higher than distance BP by half the wavelength of the sound. Find the intensity recorded at P with both sources on. Give your answer for following cases: (a) The sources are coherent and in phase. (b) The sources are coherent and 180° out of phase. (c) The sources are incoherent.

The intensities of two light sources are I and 91 .If the phase difference between the waves is pi then resultant intensity will be :-

Statement I: Interference pattern is obtained on a screen due to two identical coherent sources of monochromatic light. The intensity at the central part of the screen becomes one -fourth if one of the sources is blocked. Statement II: The resultant intensity is the sum of the intensities due to two sources.