Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A short linear object of length b lies along the axis of a concave mirror of local f at a distance u from the pole of the mirror. The size of the image is approximately equal to - Sarthaks eConnect

A short linear object of length b lies along the axis of a concave mirror of local f at a distance u from the pole of the mirror. The size of the image is approximately equal to

`b((u-f)/f)^(1/2)`

`b(f/(u-f))^(1/2)`

`b((u-f)/f)`

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