A convex lens made up of glass of refractive index 1.5 is dipped, in turn, in (i) a medium of refractive in dex 1.65, (ii) a medium of refractive index 1.33. (a) Will it behave as a converging or a diverging lens in the two cases ? (b) How will its focal length change in the two media ?

A convex lens made up of glass of refractive index 1.5 is dipped, in t

1.	A convex lens made up of glass of refractive index 1.5 is dipped, in turn, in (i) a medium of refractive in dex 1.65, (ii) a medium of refractive index 1.33. (a) Will it behave as a converging or a diverging lens in the two cases ? (b) How will its focal length change in the two media ?
Answer» SOLUTION :`(1)/(f) = ( mu -1) ( ( 1)/(R_(1)) - ( 1)/( R_(2)))` (a) (i) DIVERGING LENS or concave lens (ii) Converging lens or convex lens (b) (i) Focal length will BECOME negative nad its magnitude would increase (ii) Focal length increases.

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A convex lens made up of glass of refractive index 1.5 is dipped, in turn, in (i) a medium of refractive in dex 1.65, (ii) a medium of refractive index 1.33. (a) Will it behave as a converging or a diverging lens in the two cases ? (b) How will its focal length change in the two media ?

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