Question

Two identical convex lenses and are placed at a distance of from each other on the common principal axis. The focal length of each lens is and the lens is to the right of lens .A point object is placed at a distance of on the left of lens , on the common axis of two lenses. Find, where a convex mirror of radius of curvature should be placed to the right of so that the final image coincides with the object?

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Updated on : 2022-09-05
Solution
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The distance

Focal lengths of each lense

The lens to the right of lens A

A point object is placed at a distance of left of lose

Image after 1st refraction from lens

After reflection from the mirror,

It will refract again by the curved surface

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