The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is equal to h2x · m · a02. Find the value of 10 × x, where a0 is the radius of the first Bohr orbit, m is the mass of the electron, and h is Planck's constant.

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?