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PART - 3 CH - 9 Light-Reflection and Eefraction — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10SciencePART - 3 CH - 9 Light-Reflection and Eefraction1 Mark
Question
Define the principal focus of concave mirror.
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Answer

The point on the principal axis of a concave mirror, at which rays of light incident on the mirror in a direction parallel to the principal axis (actually) meet/intersect after reflection from the mirror is called the principal focus (F) of the concave mirror.

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