(Solved): 3. Light is incident on prism with apex angle \( \phi=73.0^{\circ} \) at angle \( \theta=56.7^{\ci ...

3. Light is incident on prism with apex angle \( \phi=73.0^{\circ} \) at angle \( \theta=56.7^{\circ} \), as shown. (a) If the prism is surrounded by air with \( n_{\text {air }}=1.00 \), and if light reemerges at the same angle it entered at, then what must be the index of refraction of the prism? (b) What would be the angle of deviation, \( \psi \) ? (c) If instead, the prism is surrounded by fluid with index of refraction \( n=1.21 \) then what would be the new angle of deviation, \( \psi \) ?