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Wave Optics

Question
CBSEENPH12038330
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Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?

Solution
Indeed, the colour of the light influence the refractive index and speed of light in a medium. That is, both of them depends on the wavelength of the light.
We know that, μ > μr.
Hence,  vviolet < vred.
Thus, the violet component of white light travels slower in prism as compared to the red light.

Some More Questions From Wave Optics Chapter

What is the shape of the wavefront in each of the following cases:
 Light diverging from a point source.

What is the shape of the wavefront in each of the following cases:
 Light emerging out of a convex lens when a point source is placed at its focus.

What is the shape of the wavefront in each of the following cases:
The portion of the wavefront of light from a distant star intercepted by the Earth. 

Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?

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