Question

 Find  the power of a concave Lens Whose focal length Is. 5 meters ?​

Answer 1

Answer:

$\huge\star\underbrace{\mathtt\red{⫷❥ᴀ᭄} \mathtt\green{n~ }\mathtt\blue{ §} \mathtt\purple{₩}\mathtt\orange{Σ} \mathtt\pink{R⫸}}\star\:$

Explanation:

=>Given=Focal length=5m.

=Power=?

☆As power=1/Focal lenght (in m)

=>p=1/f

=>p=1/5

=>p=0.2D

☞So the power of the lens is -1/5 or -0.2Dioptre(D) as the lens is a concave lens.

HOPE IT HELPS.