Question

When an equilateral prism is in minimum deviation position the angle of incidence is ______.

विकल्प

• greater than the angle of emergence

• smaller than the angle of emergence

• equal to the angle of emergence

• none of these

Answer 1

When an equilateral prism is in minimum deviation position the angle of incidence is equal to the angle of emergence.

Explanation:

At the minimum deviation position, the path of light through the prism is symmetrical. Therefore, the angle of incidence is equal to the angle of emergence.