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In Young's double-slit experiment, light...

In Young's double-slit experiment, light of wavelength 400 nm is used to produce bright fringes of width 0.6 mm at a distance of 2 m. if whole apparatus is immersed in water of refractive index `4/3`, then fringe width will be

A

0.6 mm

B

0.45 mm

C

0.8 mm

D

0.3 mm

Text Solution

Verified by Experts

The correct Answer is:
B
`beta_(water)=(beta_(air))/(n_(water))=(0.6mm)/((4)/(3))=0.45mm`
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