A solid sphere of radius ‘r’ is kept on a concave mirror of radius of curvature R. The arrangement is kept on a horizontal table. If the sphere is displaced from its equilibrium position and left, then it executes SHM. The period of oscillation will be (sphere does't slip)

A solid sphere of radius ‘r’ is kept on a concave mirror of radius

1.	A solid sphere of radius ‘r’ is kept on a concave mirror of radius of curvature R. The arrangement is kept on a horizontal table. If the sphere is displaced from its equilibrium position and left, then it executes SHM. The period of oscillation will be (sphere does't slip)
Answer» `2PI SQRT([(R - r)(1.4)G])` `2pi sqrt([((R - r))/g])` `2pi sqrt([((Rr))/g])` `2pi sqrt([((R))/(gr)])` Answer :A