What is vicarious liability?

Generally, a man is liable for his own wrongful acts. He is not liable for the wrongful acts of others. But under certain circumstances a man may be held liable for the wrongful acts of others. This is popularly known as vicarious liability. The common instances of such relationship are liability of master for torts of his servants, liability of partners for torts of each other, and liability of principle for the torts of his agent.