1.

A convergent beam seems to converge at a point which is 15 cm behind a mirror, but due to reflection at the mirror, the beam diverges and seems to emerge from a point which is 12 cm behind mirror, find focal length of mirror.

Answer»
A convergent beam seems to converge at a point which is 15 cm behind a mirror, but due to reflection at the mirror, the beam diverges and seems to emerge from a point which is 12 cm behind mirror, find focal length of mirror.


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