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Focus of a Concave Lens

an objet is p...

Question

an objet is placed 30cm in front of a plano convex lens with its spherical surface of radius of curvature 20cm if the refractive index of the material of the lense is 1.5 find position and nature of image formed

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Q. A pin is placed

10 c m

in front of a convex lens of focal length

20 c m,

made of material having refractive index

1.5.

The surface of the lens farther away from the pin is silvered and has a radius of curvature

22 c m .

Determine the position of the final image.

Q. A plano – convex lens of refractive index 1.5 and radius of curvature 30cm is silvered at the curved surface. Now this lens is used to form the image of an object. At what distance from this lens, an object be placed in order to have a real image of the size of the object?

Q. A pin is placed

10

cm in front of a convex lens of focal length

20

cm and refractive index

1.5

. The surface of the lens farther away from the pin is silvered and has a radius of curvature of

22

cm. How far from the lens is the final image formed?

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

20

cm. If the refractive index of the material of the lens is

1.5

. Its focal length is:

Q. The radius of curvature of a plano-convex lens is 20 cm If the refractive index of the material of the lens be 1.5 it will

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