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Prove that f=r÷2

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Prove that f=r÷2

Posted by Adarsh Vikram 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Rachit Kumar 5 years, 2 months ago

This can be proved as As the focal length is the distance between focus and pole, and the focal lenth is also equal to the distance between focus and centre of curveture So 2Focal lenth =Radius Focal lenth = 1/2Radius

0Thank You

Ipsita Seal 5 years, 2 months ago

The focus is the midpoint of radius of curvature. Therefore 2F = R => F = R / 2

0Thank You

Anirudh Jaat From Haryana 5 years, 2 months ago

Because 2f = R So- F=R÷2

0Thank You

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CBSE > Class 10 > Science