Question

Focal length of a convex mirror whose radius of curvature 40cm is

Answer 1

$\huge\underline\mathfrak\blue{Solution}$

Given

Radius of curvature = 40cm

Using the formula -> R = 2f

40 = 2f

40/2 = f

Hence the focal length is 20cm

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Answer 2

$\huge\star\underline\mathfrak\purple{Hello}$

It is Given that,

Radius of curvature = 40cm

Using the formula -> R = 2f

40 = 2f

40/2 = f

f = 20

Hence the focal length is 20cm.