An infinitely along rod lies along the axis of a concave mirror of focal length f. the near end of the rod is at a distance u gt f from the mirror. Its image will have a length.

An infinitely along rod lies along the axis of a concave mirror of foc

1.	An infinitely along rod lies along the axis of a concave mirror of focal length f. the near end of the rod is at a distance u gt f from the mirror. Its image will have a length.
Answer» `(UF)/(u-f)` `(uf)/(u+f)` `f^2/(u+f)` `f^2/(u-f)` ANSWER :D