At the bottom of a trough filled with water a rectangular glass slab is placed. A ray of light is incident on the water surface at an angle of `30^(@)` and enters the glass after passing through the water. What is the angle of refraction in glass? Given, refractive index of water is 1.33 and that of glass is 1.5.

Explanation

To solve the problem, we need to find the angle of refraction in glass when a ray of light passes through water and then enters a glass slab. We will use Snell's Law, which states that:

\[ n_1 \sin(\theta_1) = n_2 \sin(\theta_2) \]

where \( n_1 \) and \( n_2 \) are the refractive indices of the two media, and \( \theta_1 \) and \( \theta_2 \) are the angles of incidence and refraction, respectively.

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