Question

what do you mean by power of lens what is units if the focal length of convex lens is 150 centimetre what is power​

Answer 1

Answer:

achieved by a given lens is called power of the lens.

The unit of power of lens is diopter and is expressed by D.

Focal length of lens used by first student is in positive hence it is a convex lens. The lens of second student is a concave lens.

p=

f

1

=

0.5

1

=2

Power of lens (first student) =+2

Power of lens (second student) =−2

Explanation:

you you can understand by this answer