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A ray of light falls on a normally on a ...

A ray of light falls on a normally on a refracting face of a prism. Find the angle of prism if the ray just fails to emerge from the prism `(mu=3//2).`

Text Solution

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The correct Answer is:
A, B, C, D
`i_1=0^@ rArr r_1=0^@ or r_2=A`
Now, `r_2=theta_C=A`
`:. Sin A =sin theta_C=1/mu=2/3`
or `A=sin^-1(2/3)`
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