Question

A parallel beam of monochromatic light of wavelength 500nm is incident normally on a single narrow slit of width 0.001mm. The light is focused by a convex lens on a screen placed on the focal plane. The first minima will be formed for the angle of diffraction equal to:

Answer 1

Answer:

convex lens lens lens lens

Answer 2

Answer:

The answer is 20 degree.

Explanation:

dsinθ=mλ

θ=sin

−1

(

d

mλ

)

=sin

−1

(

0.001×10

−3

(1)(5000×10

−10

)

)

θ=30

o

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