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Question

Physics Question on Spherical Mirrors

An infinitely long rod lies along the axis of a concave mirror of focal length . The near end of the rod is a fa distance u>fu > f from the mirror. Its image will have a length

A

f2u−f\frac{f^2}{u-f}

B

f2u+f\frac{f^2}{u+f}

C

ufu−f\frac{uf}{u-f}

D

ufu+f\frac{uf}{u+f}

Answer

f2u−f\frac{f^2}{u-f}

Explanation

Solution

Answer (a) f2u−f\frac{f^2}{u-f}