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Reflection of Light — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceReflection of Light5 Marks
Question
Define: Focal length of a mirror (f)
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Answer

The distance (f) between the pole and the principal focus of the mirror is called the focal length. This distance is half of the radius of curvature of the mirror. f=R2

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