If we say that the focal length of a spherical mirror is $n$ times its radius of curvature, then $n$ must be

2.0

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1.5

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0.2

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0.5

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Solution

The correct option is D $0.5$
According to the question-
$f = n R$
We know the relation between focal length and radius of curvature, which is:
$R = 2 f$
S0,
$\Rightarrow f = 0.5 R$
So, value of $n$ is $0.5$ .

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If we say that the focal length of a spherical mirror is n times its radius of curvature, then n must be

The correct option is D 0.5According to the question-f=nR We know the relation between focal length and radius of curvature, which is:R=2fS0,⇒f=0.5RSo, value of n is 0.5.

If we say that the focal length of a spherical mirror is $n$ times its radius of curvature, then $n$ must be

The correct option is D $0.5$
According to the question-
$f = n R$
We know the relation between focal length and radius of curvature, which is:
$R = 2 f$
S0,
$\Rightarrow f = 0.5 R$
So, value of $n$ is $0.5$ .