Question

To produce dispersion without deviation, a thin prism of angle \(15^\circ\) made of glass (refractive index 1.45) is combined with another prism made of glass of refractive index 1.75. The prisms are arranged such that refracting angles are in opposite direction. Find the angle of second prism.

• A. \(10^\circ\)
• B. \(12^\circ\)
• C. \(6^\circ\)
• D. \(9^\circ\)

Hint:

For no deviation condition, always equate \((\mu-1)A\) for both prisms.

Answer 1

The Correct Option is D