Question

Find the angle of deviation produced by the prism.

Answer 1

Prism Deviation Calculation

The deviation caused by a prism is contingent upon its refractive index, prism angle, and angle of incidence. The total deviation, denoted by \( \delta \), is determined by the formula:

\[ \delta = (\theta_1 + \theta_2) - \text{Prism angle} \]

Here:

• \( \theta_1 \) represents the angle of incidence at the initial surface. In this scenario, it is \( 0^\circ \) as the light strikes normally.
• \( \theta_2 \) denotes the angle of refraction within the prism.

Given a refractive index of \( \sqrt{2} \) and considering a right-angled prism, the angle of deviation is calculated as:

\[ \delta = 60^\circ \]

Consequently, the prism's angle of deviation is established as: \( \delta = 60^\circ \)