A simple pendulum is swinging vertical plane. The ratio of its potential energy when it is making `45^(@)` and `90^(@)` with the vertical is

A simple pendulum is swinging in vertical plane. The ratio of its potential energies when it is making angles 45^(@) and 90^(@) with the vertical is

A simple pendulum is swinging in a vertical plane.The ratio of its potential energies when it is making angles 30^(@) and 60^(@) with the vertical is

A simple pendilum is swinging in a vertical plane. The ratio of its potential energies when it is making angles 30^(@) and 60^(@) with the vertical is,