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In a plane diffraction grating with N elements, the intensity of the diffracted beam is:

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In a plane diffraction grating with N elements, the intensity of the diffracted beam is:

(a)  Proportional to √N

(b)  Proportional to N

(c)  Proportional to  N2

(d)  independent of N

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1 Answer

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Best answer

Correct option  (c) Proportional to N2 

Explanation:

In plane grating the intensity is proportion to square of number of lines drawn on the grating  I ∝ N2

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