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Combinations of Lenses & Mirrors

The equiconve...

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The equiconvex lens of glass refractive index 1.5 of focal length 10 cm in air is silvered on one side it will behave lik

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Q. A plano convex lens when silvered in the plane side behaves like a concave mirror of focal length 30 cm. However, when silvered on the convex side it behaves like a concave mirror of focal length 10 cm. Then the refractive index of the material will be

Q. A plano-convex lens, when silvered in the plane side, behaves like a concave mirror of focal length

30 c m

. When it is silvered on the convex side, it behaves like a concave mirror of focal length

10 c m

. The refractive index of the material of the lens is :

Q. When the plane surface of a planoconvex lens of refractive index

1.5

is silvered, it behaves like a concave mirror of focal length

30 c m

. When its convex surface is silvered, it will behave like a concave mirror of focal length

Q. The radius of curvature of a thin plano convex lens is 10 cm and the refractive index of its glass is 1.5. If the plane surface is silvered , then it will behave like a :

Q. A planoconvex lens, when silvered in the plane side behaves like a concave mirror of focal length

30

cm. However, when silvered on the convex side it behaves like a concave mirror of focal length

10

cm. Then the refrective index of its material will be

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