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A narrow beam PQ of white light is passi...

A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram
(i) Write the name and cause of the phenomenon observed.
(ii) Where else in nature is this phenomenon observed ?
(iii) Based on this observation, state the conclusion which can be drawn about the constituents of white light.

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SL ARORA-Thermal Properties of Matter-Exercise
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