1.

The refractive index of water is 4//3 and that of glas is 5//3. What will be the critical angle for the ray of light entering water form the glass?

Answer»

`SIN^(-1)(4/5)`
`sin^(-1)(5/4)`
`sin^(-1)(1/2)`
`sin^(-1)(2/1)`

SOLUTION :(a) `MU=(mu_(1))/(mu_(2))=(5//3)/(4//3)=5/4`
`sinC=1/(mu)=4/5impliesC=sin^(-1)(4/5)`


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