1.

In the figure shown `sin i/sin r` is equal to A. `(mu_2^2)/(mu_3mu_1)`B. `mu_3/mu_1`C. `(mu_3mu_1)/(mu_2^2)`D. `mu_1/mu_3`

Answer» Correct Answer - B
`mu_1sini_1=mu_3sini_3`
`:. mu_1sini=mu_3sinr` or `sini/sinr=mu_3/mu_1`


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