First slide

Young's double slit Experiment

Question

In Young's double slit experiment the angular width of a fringe formed on a distant screen is 1°. The wavelength of light used is 6000 A. The spacing between the slits is approximately :

Easy

A

1 mm
B

0.05 mm
C

0.03 mm
D

0.01 mm

Solution

Angular width of a fringe = $\frac{λ}{d}$

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