A point source O is placed at a distance of 12.5 cm from a converging lens of focal length 10 cm, on its principal axis as shown in tr e figure. Find the distance at which a diverging mirror of tocal length 20 cm should be placed, so that a real image is formed on the source itself.

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A point source S is placed at a distance of 15 cm from a converging lens of focal length 10 cm on its principal axis. Where should a diverging mirror of focal length 12 cm be placed so that a real image is formed on the source itself?

Q. A point source S is placed at a distance of

15 c m

from a converging lens of focal length

10 c m

on its principal axis. Where should a diverging mirror of focal length

12 c m

be placed so that a real image is formed on the source itself?

Q. A converging lens of focal length

15 c m

and a converging mirror of focal length

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from the lens. Where should a point source be placed on the principal axis so that the two images form at the same place?

A converging lens of focal length $20 cm$ and a diverging mirror of focal length $10 cm$ are placed $5 cm$ apart with their principal axes coinciding. Where should an object be placed so that its image falls on itself?

Q. A converging lens of focal length

15 c m

and a converging mirror of focal length

20 c m

are placed with their principal axis coinciding. A point source

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is placed on the principal axis at a distance of

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from the lens as shown in the figure. It is found that the final beam comes out parallel to the principal axis. Find the separation between the mirror and the lens.

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