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A parallel beam of light of wavelength 5...

A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Find the width of the slit.

A

`0.02` mm

B

`0.2` mm

C

`2.0` mm

D

`0.002` m

Text Solution

Verified by Experts

The correct Answer is:
B
For answer see Physics Darpan, Part-2, Section-B, Exercises of Textbook example no. 10.19
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