The man who has won Nobel Prize twice in physics is
A. Einstein
B. Bardeen
C. Heisenberg
D. Faraday

Hint: The man who won the Nobel prize in physics twice, first shared it with William Shockley and Walter H. Brattain in 1956. The second time he won the Nobel prize, he shared it with Leon N. Cooper and John R. Scheiffer in 1972.

Detailed step by step solution:
The only person in history to win a Nobel prize in physics twice was John Bardeen. He was an American physicist born on May 23, 1908 and was affiliated to University of Illinois, USA.
He was awarded his first Nobel prize in 1956 which he shared with William Shockley and Walter H. Brattain. The prize was given to honour the invention of the transistor. It is a semiconductor electronic device which amplifies the electronic signals. The transistor was invented and developed by Bardeen and his partner Walter H. Brattain in 1947. This device was further improved by William Shockley who gave the transistor its name.
The second Nobel prize was received by Bardeen in 1972 which he shared with Leon N. Cooper and John R. Scheiffer. They together studied and developed the theory for superconductivity. This theory is known as the BCS theory which stands for Bardeen-Cooper-Scheiffer theory.

Note:
1. The invention of the transistor is considered to be a revolution in the electronic industry. This device forms a very important component of almost every electronic device around us.
2. The phenomenon of superconductivity is very important in the field of physics and BCS theory played an important role in understanding this phenomenon and applying it for use in experimental research.