State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of Sun contains seven colors using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to .each other and a narrow beam of white light is allowed to fall obliquely on one of .the focus of the first prism.(Delhi - 2016)
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Newton show that white light of Sun contains seven colors using two identical glass prisms.
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1. The cause of dispersion of white light passing through a glass prism is the existence of different wavelengths for different colours of light.
2. Newton showed that white light of Sun contains seven colors using two identical glass prisms by recombining dispersed light from one prism using a second prism to produce a beam of white light.
3. A ray diagram is drawn to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
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