Explain duty.

Duty signifies an obligation. A man is said to have duty in any matter if he is under an obligation to do something. It is such an obligation by virtue of which we are bound to do something or refrain from doing. In fact, rights and duties go side-by-side and are the two facets of the same coin. If we wish to enjoy the civil and political rights, we must perform certain duties towards the state because it is the duties which create the essential qualities of sacrifice, courage and discipline among the citizens.