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Light enters from air into a medium of R.I. 1.5. What is the percentage change in its wavelength?

A

`25%`

B

`33.33%`

C

`66.66%`

D

`11.11%`

Text Solution

Verified by Experts

The correct Answer is:
B
`lambda_(m)=(lambda_a)/(3//2)=(2)/(3)lambda_a`
`:.` change `=lambda_a-(2)/(3) lambda_a=(lambda_a)/(3)`
`:.` Percentage change in ` lambda=33.33%`
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