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Two coherent light sources, each of wave...

Two coherent light sources, each of wavelength `lambda`, are separated by a distance `3 lambda`, The maximum number of minima formed on line AB, which funs from `-oo` to `+oo`, is

A

2

B

4

C

6

D

8

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