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A ray of light is incident on a prism as...

A ray of light is incident on a prism as shown in fig. Find the total deviation suffered by the ray if `/_BAC = 1^(@)` and `/_CAD = 2^(@)`.

A

`1^(@)`

B

`1.5^(@)`

C

`2.5^(@)`

D

`2^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
`delta_(ul("net")) =delta_(1) +delta_(2)`
`= (mu -1)A_(1) +(mu_(2)-1) A_(2)`
`= (1.5-1)1^(@) +(2-1) xx 2^(@)`
`= 2.5^(@)`
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