A particle moves on a circle of radius r with centripetal acceleration as a function of time as ac = k2rt2, where k is a positive constant. If α denotes the angle made by the resultant acceleration with the tangential direction at some instant, then:

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?