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In Young's double slit experiment, when ...

In Young's double slit experiment, when light of wavelength `4000 A^(@)` is used 90 fringes are seen on the screen. When light of 3000 A is used, the number of fringes seen is

A

70

B

120

C

140

D

68

Text Solution

Verified by Experts

The correct Answer is:
B
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