The Radius of Curvature of a Concave mirror is 15 cm. Focal length will be

The radius of curvature of a concave mirror is 15 cm. Its focal length will be

  • -15 cm
  • -7.5 cm
  • +30 cm
  • +7.5 cm
Monis Rasool Professor Asked on 6th May 2015 in Physics.
Add Comment
  • 1 Answer(s)
    Best answer

    Ans.  focal length will be +7.5 cm.
    The relation between radius of curvature and focal length —
      f = R/2
     R = =15 cm
    f = ?
    f = 15/ 2
        f = 7.5 cm.

                                 Therefore focal length is +7.5 cm.

    Anurag Mishra Professor Answered on 6th May 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.