Question

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Q) relationship between F and R,
R= 2 F​

Answer 1

Answer:

Since R = 2F

Therefore if R is doubled then F will be four times and if R is halved then F will be 1/4 times the initial value

Explanation:

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Answer 2

Answer:

The relationship between the focal length f and radius of curvature r is r = 2f.

Explanation:

The distance from the pole to the focal point is called the focal length (f).

hope it helps u dear...