Question

A student while performing the prism experiment observes that white light

when passed through a prism, split into different colours.

i) Identify the phenomena

j) Identify the colours at the bottom and top after passing through the

prism.​

Answer 1

Answer:

dispersion of light

all the seven colours

Explanation:

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Answer 2

This phenomena is known as dispersion. The red colour stays at the top and the violet colour stays at the bottom, after the dispersion.

• The normal white light rays are made up of seven individual light rays of basic colours.
• Now, the light rays of different colours have different wavelengths (which affects bending angles of the light rays) and this difference is the reason behind the splitting of light rays of while passing through the prism.
• Among the seven colours, the red colour stays at the top because it has the greatest wavelength and shortest bending. On the other hand, violet colour stays at the bottom because it has the shortest wavelength and greatest bending.