First slide

Diffraction

Question

A slit 5.0 cm wide is irradiated normally with microwaves of wavelength 1 . 0 cm. Then the angular spread of the central maximum on either side of the incident light is nearly

Moderate

A

1/5 radian
B

4 radian
C

5 radian
D

6 radian

Solution

Angular spread of the central maximum on either side of the incident light
$= \frac{λ}{d} = \frac{1}{5} radian$

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