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Plane microwaves are incident on a long ...

Plane microwaves are incident on a long slit having a width of 5.0 cm. Calculate the wavelength of the microwaves if the first diffraction minimum is formed at `theta=30^@`.

A

2 . 5 cm

B

5 cm

C

7 . 5 cm

D

10 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`a sin theta = n lambda`
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