Question

The ratio of the speeds of light in a prism P and in vacuum is \(1:\sqrt3\) and the angle of minimum deviation is \(60^\circ\). In another prism Q of same angle of prism, if the angle of minimum deviation is \(30^\circ\), then the refractive index of the material of prism Q is:

• A. \(\sqrt{2.5}\)
• B. \(\sqrt{1.5}\)
• C. \(\sqrt3\)
• D. \(\sqrt2\)

Hint:

Remember: \[ \mu= \frac{\sin\left(\frac{A+\delta_m}{2}\right)} {\sin(A/2)} \] for a prism at minimum deviation.

Answer 1

The Correct Option is B