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]

1.5

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1.66

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1.33

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Solution

The correct option is C
1.33

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Similar questions

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:

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. In a plano convex lens the radius of curvature of the convex lens is

10 c m

. If the plane side is polished, then the focal length will be
(Refractive index

= 1.5

)

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)

The radius of curvature for a convex lens is 40 cm, for each surface. Its refractive index is 1.5. The focal length will be

[MP PMT 1989]

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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]

The correct option is C 1.33

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]

The correct option is C
1.33