question_answer

In Young's double slit experiment, the distance between slits and the screen is 1.0 m and monochromatic light of 600 nm is being used. A person standing near the slits is looking at the fringe pattern. When the separation between the slits is varied, the interference pattern disappears for a particular distance \[{{d}_{0}}\] between the slits. If the angular resolution of the eye is\[\frac{{{1}^{o}}}{60}\]the value of \[{{d}_{0}}\] is close to [JEE ONLINE 09-04-2016]

A) 2 mm

B) 1 mm

C) 3mm

D) 4 mm

Correct Answer: A

Solution :

[a] Angular fringe width