Q. The path difference for constructive interference in terms of wavelength $\lambda $ is

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A

$n\lambda $

B

$\left(\right.2n+1\left.\right)\lambda $

C

$\left(\right.2n-1\left.\right)\lambda $

D

$\left(\right.n+1\left.\right)\frac{\lambda }{2}$

Solution:

Path difference for constructive interference is $n\lambda $ .
$\left(\right.$ where, $n=1,2,3,4,5\left.$

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