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Q10.3  (b) 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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No, the speed of light in glass is not independent of the colour. The colour of the light does influence the refractive index and speed of light in the medium. The refractive index of the violet light is greater than the refractive index of red light and hence red component of the white light travels faster in the glass than the red component of the light.

as 

v=\frac{c}{\mu }

 the more the refractive index, the lesser the speed.

Posted by

Pankaj Sanodiya

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