Science, asked by lingarajlingaraj1855, 2 months ago

If the radius of curvature of a lens is 30 cm, then what is its focal length?

Answers

Answered by Anonymous

12

Explanation:

Given,

Radius ( r ) = 30 cm

To find : Focal length ( f ) = ?

Formula : -

R = 2f

30 = 2f

f = 30 / 2

f = 15 cm

Therefore, its focal length is 15 cm.

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