Two waves of intensity ratio 
cross each other at a point. Calculate the ratio of resultant intensities at a point, when (I) waves are incoherent (II) waves are coherent and differ in phase by 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Here, 
or 
(I) When the sources are incoherent, no interference occurs. Resultant intensity at any point is the sum of the intensities of individual waves, i.e., 
(II) When the sources are coherent, and constant phase diff. 
, then
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