Which of the following phenomenon is caused by difference in the rate of refraction?

Images appearing closer in the mirror

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Formation of rainbow

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Magnification of objects

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Formation of virtual image using a mirror

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Solution

The correct option is B
Formation of rainbow

When light is passed through a prism it splits into its component colours. The phenomenon of the splitting up of white light into its component colours is dispersion. It occurs because different colours in white light undergo different extents of refraction.

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