Where should an object be placed in front of concave mir ror

Last updated: 6/24/2023

Where should an object be placed in front of concave mir ror of focal length 15cm to have magnification of 3 sir why it is taken as 3 Where should an object be placed in front of a concave mirror of focal length 15 cm to have a magnification of 3 in case of a real image b virtual image