The distance between the first and fifth minima of a single-slit diffraction pattern is 0.400 mm with the screen 37.0 cm away from the slit, when light of wavelength 570 nm is used. (a) find the slit width. (b) calculate the angle θ of the first diffraction minimum.

a)

b)

Explanation:

Given:

Let d be the width of the slit

a)

b)we know that

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