A light ray enters from air into an optical fiber having a refractive index of 1.45. If the angle of incidence of the light ray at the end face of the optical fiber is 22°, what will be the approximate angle of refraction inside the optical fiber? (Given sin 22° ≈ 0.3746, sin 14.99° ≈ 0.2583)

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?