Two identical circular coils carrying equal currents are held concentrically with their planes perpendicular to each other. The ratio of the magnitude of the magnetic field at the center due to one coil to the magnitude of the resultant magnetic field at the center is:

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?