Question

behind a concave lens about how much distance from it the light rays may seem to diverged out after refraction its radius of curvature of the lens is 36cm ?

please answer is fast...​

Answer 1

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• When The Ligh rays seem at 2F we get 36cm image distance

Answer 2

Explanation:

Radius Of Curvature = 36cm

Since the focal length = R/2

Therefore, The focal Length = 36cm/2

= 18cm

The Distance Required = 18cm

Explanation:

Here in this question, the focal length is required because it is the distance between focus and optical centre.

Hope, it helps U (•‿•)