When brake is applied in a bicycle, the brake pad touches the wheel. Now what stops the movement of the wheel?

Correct option is A

The correct answer is (a) The friction between the pad and the rim.
· When the brake lever on a bicycle is applied, the brake pads are pressed against the rim of the wheel. This action creates friction between the brake pads and the rim.
· Friction is the resistive force that occurs when two surfaces are in contact and move against each other. In this case, the frictional force generated by the brake pads pressing against the rim opposes the rotational motion of the wheel.
· The friction between the brake pads and the rim converts the kinetic energy of the moving bicycle into thermal energy (heat), thereby reducing the speed of the wheel and eventually bringing it to a stop.