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Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.

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Question

Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.

Numerical
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Solution

Given: Radius of curvature (r) = 25 cm

We know that f = `R/2`

f = `25/2`

f = 12.5 cm

∴ The focal length of the spherical mirror is 12.5 cm.

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Chapter 1: Reflection of Light - Exercise 2 [Page 28]

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Lakhmir Singh Physics [English] Class 10
Chapter 1 Reflection of Light
Exercise 2 | Q 8. (ii) | Page 28
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