An interference is observed due to two coherent sources ‘A’ & ‘B’ separated by a distance 4 λ λ along the y-axis where λ λ is the wavelength of the source. A detector D is moved on the positive x-axis. The number of points on the x-axis excluding the points, x = 0 & x = ∞ at which maximum will be observed is –
Text Solution
Verified by ExpertsThe correct answer is:
A
To obtain maxima the path difference
Form 
,
For 
So the total no. of maxima points observed are 3.
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