A thin prism is made of a material having refractive indices 1.61 and 1.65 for red and violet light. The dispersive power of the material is 0.07. It is found that a beam of yellow light passing through the prism suffers a minimum deviation of `4.0^@` in favourable conditions. Calculate the angle of the prism.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the given data
We have:
- Refractive index for red light, \( \mu_r = 1.61 \)
- Refractive index for violet light, \( \mu_v = 1.65 \)
- Dispersive power, \( \omega = 0.07 \)
- Minimum deviation for yellow light, \( \delta_y = 4^\circ \)
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