With a concave mirror, an object is plac...

With a concave mirror, an object is placed at a distance `x_(1)` from the princiipal focus, on the principal axis. The image is formed at a distance `x_(2)` from the principal focus. The focal length of the mirror is

`x_(1)x_(2)`

`(x_(1) + x_(2))/2`

`sqrt(x_(1)/x_(2))`

`sqrt(x_(1)x_(2))`

Text Solution

Verified by Experts

The correct Answer is:

`u=x_(1)+f,1/u+1/v`

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