Water flows through a horizontal pipe of non-uniform cross-section. The pressure difference between two points is 1.6 cm of mercury. If the velocity of water at the larger cross-section is 50 cm/s, find the velocity of water at the other end (in m/s).

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?