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प्रश्न
Focal length of a mirror is given by ______.
विकल्प
f = R2, R = radius of curvature
f = `"R"/4`, R = radius of curvature
f = R, R = radius of curvature
f = `"R"/2`, R = radius of curvature
MCQ
रिक्त स्थान भरें
उत्तर
Focal length of a mirror is given by f = `underline("R"/2)`, R = radius of curvature.
shaalaa.com
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