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Consider an equi-convex lens of glass. If temperature of lens is increased by 20^@C then its focal length remain same_ The coefficient of linear expansion of glass is 5 xx 104/^@C. Calculate change in refractive index of glass on increasing temperature by 20^@C.

Consider an equi-convex lens of glass. If temperature of lens is increased by 20^@C then its focal length remain same_ The coefficient of linear expansion of glass is 5 xx 104/^@C. Calculate change in refractive index of glass on increasing temperature by 20^@C.

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