Science, asked by annie8818, 2 months ago

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

Answers

Answered by shhxdjaln

3

Explanation:

f = r/2

OR

r = 2f

so the answer will be 30/2 = 15 cm

Answered by theekshisune

3

Answer:

Explanation:

R=2f

2f = 30

f = 15cm

therefore, focal length is 15cm

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