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Subjects
Science CBSE
Class 10
Light reflection and refraction
Textbook questions
16.
Intext Questions II
Exercise condition:
3
m.
The radius of curvature of a spherical mirror is \(20\ cm\). What is its focal length?
Formula to
focal length of the mirror
is,
\(f\ =\ 4R\)
\(f\ =\ \frac{R}{4}\)
\(f\ =\ 2R\)
\(f\ =\ \frac{R}{2}\)
Focal length
(\(f\)) \(=\)
\(cm\)
Important!
Note: Enter your answers with no decimal digits.
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