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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 observe on 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

2mm

B

0.2 mm

C

1 mm

D

0.1 mm

Text Solution

Verified by Experts

The correct Answer is:
B
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