Question

light of wavelength 6328 A is incident normally on a slit having a width of 0.2 mm. The width of the central maximum measured from minimum to minimum of diffraction pattern on a screen 9 m away will be nearly
(1) 0.36 degree
(3) 0.72 degree
(2) 0.18 degree
(4) 0.09 degree​

Answer 1

Answer:

.72 degree

Explanation:

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