if the radius of curvature of a convex mirror is 40 cm what is its focal length
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R=2f
R/2=f
40/2=20cm
20 is the answer
R/2=f
40/2=20cm
20 is the answer
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Answered by
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Focal length = centre of curvature/2
So, f= 40/2 =20 cm
So, f= 40/2 =20 cm
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