If in a plano-convex lens radius of curvature of convex surface is 10 cm and the focal length of the lens is 30 cm, the refractive index of the material of the lens will be:

1.33

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1.66

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1.5

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Solution

The correct option is A
1.33

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If in a plano-convex lens, the radius of curvature of the convex surface is 10 cm and the focal length of the lens is 30 cm, then the refractive index of the material of lens will be

[CPMT 1986; MNR 1988; MP PMT 2002; UPSEAT 2000]

Q. If in a plano-convex lens, radius of curvature of convex surface is

10 c m

and the focal length of the lens is

30 c m,

the refractive index of the material of the lens will be :

Q. The radius of curvature of curved surface of a plano-convex lens is

15 cm

. The refractive index of the lens material is

1.5

. The focal length of plano-convex lens is (surroundings is air)

Q. What is the refractive index of material of a plano-convex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm?

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If in a plano-convex lens radius of curvature of convex surface is 10 cm and the focal length of the lens is 30 cm, the refractive index of the material of the lens will be:

The correct option is A 1.33

The correct option is A
1.33