Define Frequency Division - Application of Flip Flop?

When the pulse waveform is applied to the clock input of a J-K flip-flop that is connected to toggle, the Q output is a square wave with half the frequency of the clock input. If more flip-flops are joined together as shown in the figure below, further division of the clock frequency can be achieved.
The Q output of the second flip-flop is one-fourth the occurrence of the original clock input. This is for the reason that the frequency of the clock is divided by 2 by the first flip-flop, then divided by 2 again by the second flip-flop and If more flip-flops are connected this way, the frequency division would be 2 to the power n, where n is the number of flip-flops.