There are `10` sound sources each producing intensity I at a point independently. The are incoherent. Average intensity of sound at that point will be:

In a constructive intergerence of sound the resultant intensity of sound at a point of medium is

Light waves from two coherent sources having intensities I and 2I cross each other at a point with a phase difference of 60^(@) . The intensity at the point will be

Two sources of sound of intensity I and 4I are used in an interference of sound experiment. Then the intensity of sound at a point where the waves from the two sources superimpose with a phase difference of (pi /2) rad is

Two identical sources of sound S_(1) and S_(2) produce intensity I_(0) at a point P equidistant from each source . (i) Determine the intensity of each at the point P . (ii) If the power of S_(1) is reduced to 64% and phase difference between the two sources is varied continuously , then determine the maximum and minimum intensities at the point P . (iii) If the power of S_(1) is reduced by 64% , then determine the maximum and minimum intensities at the point P .

Define intensity of sound and loudness of sound.

In a destructive interference of sound the resultant intensity of sound at a point of medium is