In a regular right circular cone, the angle between the base and the slanting surface is 45° and the base diameter is 100 mm. If a helix is to be built on such a cone with a pitch of 5 mm, how many revolutions does the helix make from the base to the apex of the cone?

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?