Question

A 0.40 m long object is placed in front of a concave mirror of focal length 0.60 m. the sharp image forms on a screen placed 0.90 m in front of the mirror wht is the height of the image formed by the mirror

Answer 1

Try to solve using these steps
First take out the position of object
By using the formula v=u*f/u-f
U come out to be -36cm