Chapter 9

NCERT
Class 10
Science
Solutions
1. Find the focal length of a convex mirror whose radius of curvature is 32 cm.
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Question:

Find the focal length of a convex mirror whose radius of curvature is 32cm.

Answer:

Radius of curvature R = +32cm

Spherical mirror focal length = half of the radius of the mirror curvature

f = R/2

f = 32/2

f = +16cm

Focal length of the convex mirror is +16cm

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