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Which of the following is the path diffe...

Which of the following is the path difference for destructive interference ?

A

`nlambda`

B

`n(lambda+1)`

C

`((n+1)lambda)/2`

D

`((2n+a)lambda)/2`

Text Solution

Verified by Experts

The correct Answer is:
D
For destructive interference,
`cos phi=min=-1`
i.e., `phi=pmpi,pm3pi, pm 5pi`
or `phi=pm(2n+1)pi`
with `n=0, 1, 2, 3...`
or `Deltax=pm((2n+1)lambda)/2`
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