Question:

of convex lens of focal length 40 cm in contact with a

Last updated: 6/3/2023

of convex lens of focal length 40 cm in contact with a

of convex lens of focal length 40 cm in contact with a concave lens of focal length 25 cm The power of this lens combination in diopters is 1997 2M a 1 5 b 1 5 c 6 67 2 6 67