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Why a prism can disperse white light but a glass slab cannot?? |
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Answer» When light PASSES through a prism it undergoes deviation and refraction as there are many ways in which light can enter the prism. This causes light to bend in different range and such ranges cause light to scatter into its component colors. In case of glass SLAB light enter and exit in a single STRAIGHT line in TWO ways. so there is no POSSIBILITY of light to undergo multiple refraction and so no dispersion takes place. |
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