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प्रश्न
What is meant by the focal length of a convex mirror?
अति संक्षिप्त उत्तर
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उत्तर
The focal length of a spherical mirror (a concave mirror or a convex mirror) is equal to half of its radius of curvature.
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अध्याय 1: Reflection of Light - Exercise 2 [पृष्ठ २८]
