Which physiological law states that 'the stroke volume of the heart increases in response to an increase in the end-diastolic volume when all other factors remain constant' (i.e., greater initial length of cardiac muscle fibers produces stronger contraction)?

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?