Question
"Tice splitting of different colours of light in a
prism is :Solution
The refractive index of many materials (such as glass) varies with the wavelength or colour of the light used, a phenomenon known as dispersion. This causes light of different colours to be refracted differently and to leave the prism at different angles,creatinganeffectsimilartoarainbow.In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency, or alternatively when the group velocity depends on the frequency.
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What is the reflex angle between the hands of a clock at 8:30?
