Easy MCQ +4 / -1 PYQ · JEE Mains 2021

The focal length f is related to the radius of curvature r of the spherical convex mirror by :

  1. A f = r
  2. B f = $-$ r
  3. C f = +${{1 \over 2}}$ r Correct answer
  4. D f = $-$${{1 \over 2}}$ r

Solution

For convex mirror, the focal length (f) and radius of curvature (r) are related as $f = + {r \over 2}$.

About this question

Subject: Physics · Chapter: Optics · Topic: Reflection and Mirrors

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