Question

The equivalent power of two equal foci of Convex and Concave lens is __________.​

Answer 1

Answer:

power

Explanation:

please mark as branliest

Answer 2

Answer:

If convex lens of focal length f and a concave lens of power

f

1

are put in contact, then the focal length of the combination is zero.

Reason

P=

f

1

and P=P

1

+P

2