Assertion (A): Indian judiciary emerges as a mediator when any organ of the government exercises 'excess power' which tends to violate the larger societal or individual interest.
Reasoning (R):Indian Judiciary monitors and maintains the checks and balances over the other arms of the government.

Both A and R are correct and R is the correct explanation of A.

Judiciary's independence is linked to its role as the watch-dog in a democracy. It monitors and maintains the checks and balances over the other arms of the government. Thus judiciary emerges as a mediator when any organ of the government exercises 'excess power' which tends to violate the larger societal or individual interest.