Physics Problem Solving (Q -21), IIT-JEE physics classes - Videos


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Q.21-A convex lens made up of glass of refractive index 1.5 is dipped in a liquid of
i) a medium of refractive index 1.6, ii) a medium of refractive index 1.3,
a) Will it behave as a converging or a diverging lens in the two cases?
b) How will its focal length change in two media?
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