A prism is a transparent optical element with flat, polished surfaces at an angle to each other. When light passes through a prism, it refracts at bot
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What happens when light passes through a prism?
Light bends (refracts) twice — on entering and on leaving the prism — and bends towards the base. White light also splits into its seven colours, an effect called dispersion.
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What is the angle of deviation in a prism?
The angle of deviation is the angle between the direction of the incident ray and the emergent ray. It depends on the prism’s angle, its material and the angle of incidence.
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Why does a prism split white light into colours?
Different colours bend by different amounts (violet bends most, red least) because they travel at slightly different speeds in glass. This spreading of colours is called dispersion.
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