Four monochromatic and coherent sources of light emitting waves in phase at placed on y axis at y = 0, a, 2a and 3a. If the intensity of wave reaching at point P far away on y axis from each of the source is almost the same and equal to I_(0), then the resultant intensity at P for a=(lambda)/(8) is nI_(0). The value of [n] is. Here [] is greatest integer funciton.

Four monochromatic and coherent sources of light emitting waves in pha

1.	Four monochromatic and coherent sources of light emitting waves in phase at placed on y axis at y = 0, a, 2a and 3a. If the intensity of wave reaching at point P far away on y axis from each of the source is almost the same and equal to I_(0), then the resultant intensity at P for a=(lambda)/(8) is nI_(0). The value of [n] is. Here [] is greatest integer funciton.
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