A sphere of catius r is kept on a concave of mirror radius of curation `R`. The arrangement a kept
Channel: Doubtnut
Date: 2020-01-19

A sphere of catius r is kept on a concave of mirror radius of curation `R`. The arrangement a kept on a horizontal tavke (the surface of concave mirror is fricationless and sliding not rolling). If the sphere is displaced from its equilibrium position and left, then it executes `S.h.M.` The period of oscillation will be