Question

name the the type of lens if its power is ‐2.0D find the focal length of this lens​

Answer 1

Answer:

Lens is concave ...

f= 1/D

=> 1/-2

=>-50 cm

Explanation:

hope it helps...

Answer 2

Answer:

The lens is concave lens.

Explanation:

Power of a lens = focal length^-1

So f=1/p;

f=1/-2;

f=-50 cm.

since the focla length is negative, it is a concave lens,.