The condition for obtaining secondary maxima in the diffraction pattern

The condition for obtaining secondary maxima in the diffraction pattern due to single slit is

Options

(a) a sin θ=nλ/2
(b) a sin θ=(2n-1)λ/2
(c) a sin θ=nλ
(d) a sin θ=(2n-1)λ

Correct Answer:

a sin θ=(2n-1)λ/2

Explanation:

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