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UPSC NDA I and II 2020 General Ability Solved Paper
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© examsnet.com
Question : 86
Total: 150
The correct relation between the radius of curvature
R
and focal length
f
of a spherical mirror is
R
=
f
R
=
2
f
R
=
3
f
R
=
4
f
Validate
Solution:
The correct relation between the radius of curvature
R
and focal length
f
of a spherical mirror is given by formula
R
=
2
f
as the focal length of a spherical mirror is half of its radius of curvature.
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