Question

The radius of curvature of a convex lens is 50cm.what is its focal length?​

Answer 1

Answer:

As we know , Radius of curvature = 2× focal length .

Therefore , Focal length = Radius of Curvature ÷2

or , Focal length = 25 cm .

Answer 2

100 cm

Solution :

Here,

<br> From

f= 50 cm , R = ?

R = 2f = 2×50 = 100 cm.