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Figure shows the graph of angle of devia...

Figure shows the graph of angle of deviation `del` versus angle of incidence `i` for a light ray striking a prism. The prism angle is

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`75^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
`delta=30^(@)`
`delta=i+e-A`
`30^(@)=75^(@)-A`
`:. A=75^(@)-30^(@)=45^(@)`
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