An infinitely long bar lies alont the a...

An infinitely long bar lies alont the adis of cancave mirror of focal length f. the nerar end of bar is a distance `v gt f` from the mirror. Its images will have a length

`(uf)/(u+f)`

`(uf)/(u-f)`

`(f^(2))/(u+f)`

`(f^(2))/(u-f)`

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