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A ray of light enters a spherical drop o...

A ray of light enters a spherical drop of water of refractive index p as shown in the figure.
An expression of the angle between incidence ray and emergent ray (angle of deviation) as shown in the figure is

A

`0^(@)`

B

`phi`

C

`alpha-phi`

D

`pi-4alpha+2phi`

Text Solution

Verified by Experts

The correct Answer is:
D
D
`alpha=(phi-alpha)+theta`
`delta=pi-2theta=pi-4alpha+2phi`
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