Question

The radius of curvature of concave mirror is 22 cm. What is its focal length?​

Answer 1

Answer:

Radius of curvature = 2 x focal length.

So, focal length =

2

1

× radius of curvature =

2

1

×20 cm = 10 cm

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Answer 2

Explanation:

Radius of curvature = 2 x focal length.

So, focal length =

2

1

× radius of curvature =

2

1

×20 cm = 10 cm

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