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Two coherent ligh sources each of wavele...

Two coherent ligh sources each of wavelength `lambda` are separated by a distance `3lambda`. The maximum number of minimas formed on line AB which runs from `-oo " to " +oo` is

A

2

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
c
There can be three minima from central point to `oo` corresponding to `(lambda)/(3) , (3 lambda)/(2) , (5 lambda)/(2)` path differences.
Therefore, total number of minima `= 2n_(max) = 6`.
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