A current flows through a cylindrical conductor of radius R. The current density at a point in the conductor is j = αr (along its axis), where α is a constant and r is the distance from the axis of the conductor. The current flowing through the portion of the conductor from r = 0 to r = R/2 is proportional to:

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?