15 An object of height 1 5 cm is situated at a distance of

Last updated: 6/28/2023

15 An object of height 1 5 cm is situated at a distance of 15 cm from a concave mirror The concave mirror forms its real image of height 3 0 cm The focal length of concave mirror will be 1 10 cm 2 20 cm 3 20 cm 4 30 cm