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Image in Thin Lens by Ray Tracing

The principal...

Question

The principal axis of a convex lens is along x-axis. The coordinates of a point object and its image are ( -20 cm, 2 cm ) and ( 25 cm, -4 ) respectively. The focal length of lens is

A

30 cm

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B

5 cm

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C

10 cm

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D

15 cm

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Solution

The correct option is C 10 cm
Option C is correct

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