A concave lens of focal length 20 cm 13 placed in contact

Last updated: 6/18/2023

A concave lens of focal length 20 cm 13 placed in contact with a plane mirror acts as a 1 Convex mirror of focal length 10 cm 2 Concave mirror of focal length 40 cm 3 Concave mirror of focal length 60 cm 4 Concave mirror of focal length 10 cm 20 cm Hade du at yun e ven chat si 48 1 10 cm 2 40 cm 3 60 cm 4 10 cm cada an