Q.स्नेलचा नियम (Snell's law) काय सांगतो?

n_1 \sin i = n_2 \sin r

किंवा

\frac{\sin i}{\sin r} = \frac{v_1}{v_2}

i = r

i + r = 90°

sin i = sin r

The correct solution involves applying the fundamental concept to derive the final value step by step...

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