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A single slit of width 0.1mm is illumina...

A single slit of width 0.1mm is illuminated by parallel light of wavelength 6000Å, and diffraction bands are observed on a screen 40cm from the slit. The distance of third dark band from the central bright band is:

A

7.2 mm

B

3.6 mm

C

2.4 mm

D

0.6 mm

Text Solution

Verified by Experts

The correct Answer is:
A
Width `=(3xx6xx10^(-7)xx0.4)/(10^(-4)) =7.2 mm`
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