What is resultant intensity at a point due to two identical sources of each of intensity `I_0` (a) If the sources are coherent (b) Sources are incoherent

What are coherent sources ?

Two light sources are coherent when

Find the maxinum intensity in case of interference of n identical waves each of intensity I_(0) if the interference is (a) coherent and (b) incoherent.

Assertion: Two identical waves due to two coherent sources interfere at a point with a phase difference of (2pi)/3 , then the resultant intensity at this point is equal to the individual intensity of the sources. Reason: A phase difference of (2pi)/3 is equivalent to a path difference of lambda/3 .

Two sources are called coherent if they produce waves

What is meant by coherent sources of light?

Interference is produced with two coherent sources of same intensity. If one of the sources is covered with a thin film so as to reduce the intensity of light coming out of it, then

The minimum intensity of sound is zero at a point due to two sources of nearly equal frequencie4s when

Two identical speakers emit sound waves of frequency 680 H_(Z) uniformly in all directions with a total audio output of 1 mW each. The speed of sound in air is 340 m//s . A point P is a distance 2.00 m from one speaker and 3.00 m from the other. (a) Finf the intensity I_(1) and I_(2) from rach speaker at point p separately. (b) If the speakers are driven coherently and in phase, what is the intensity at point p ? (c ) If they driven coherently but of phase by 180^(@) , what is the intensity at point P ? (d) If the speakers are incoherent, what is the intensity at point p ?

The intensity ratio of the maxima and minima in an interference pattern produced by two coherent sources of light is 9:1. The intensities of the used light sources are in ratio