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In a biprism experiment, the wavelenght ...

In a biprism experiment, the wavelenght of monochromatic light is `6000Å`. The distance between two virtual images is 6 mm . The number of fringes formed per mm on a screen placed at a distance of 1 m is

A

5

B

10

C

15

D

20

Text Solution

Verified by Experts

The correct Answer is:
B
`beta=(D)/(d) lambda =(1xx6xx10^(-7))/(6xx10^(-3))=0.1 mm`
Thus,
No. of fringes formedper mm of screen `=(1)/(0.1)=10`
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