Question

51. Light of wavelength ? is normally incident on a diffraction grating G. On the screen S, the central line is at P and the first order line is at Q, as shown. The distance between adjacent slits in the grating is: incident 3m light 4m A) 35 B) 34 C) 4X/5 D) 52/4 E) 5/3

The answer is E, please explain

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51 3m ating condition ofn th or de lin iven by ne- wheme the sepa oation betw een In the-given problem eshoun.sine 3 a sin6 5

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