In a certain spectrum produced by a glass prism of dispersive power 0.031,it was found that the refractive index for teh red ray is 1.645,whereas the refractie index for the blue ray is 1.665.What is the refractive index for the yello ray?

If refractive index of glass w.r.t. air is 1.55, then what is the refractive index of air w.r.t. glass.

A glass of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the light?

Out of red and blue lights, for which colour is the refractive index of glass greater?

Find the angle fo a prism of dispersive power 0.021 and refractive index 1.53 to form an achromatic combination with prism of angle 4.2^@ and dispersive power 0.045 having refractive index 1.65.Find the resultant deviation.

The refracting angle of a prism is 60^@ nd the refractive index of the material of the prism is 1.732.Calculate the angle of minimum deviation.

Refractive index of glass is 1.5 find critical angle for glass.

What happens when a convex lens of refractive index 1.2 is immersed in a liquid of refractive index 1.3?

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40^@ . What is the refractive index of the material of the prism? The refracting angle of the prism is 60^@ . If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light.