Question

A convex lens of focal length 10 cm is in contact with a concave lens. The focal length of the combination is numerically equal to that of the concave lens. The focal length of the concave lens is

Answer 1

Explanation:

i hope it helps you and plz follow me and plz Mark as brallinest answer and plz thank my all answers plz

Answer 2

Explanation:

the difference between a convex lens and a concave lens give one use of convex lens and one of concave lens