In a hydrogen atom, an electron makes 6.6 × 1015 revolutions per second around a nucleus in an orbit of radius 0.47 Å. The magnetic field induction produced at the center of the orbit is nearly:

Mahatma Gandhi's last fast unto death in 1948 was primarily against which of the following?

What was the primary meaning of 'Swaraj' as popularized by Mahatma Gandhi during India's independence movement?

What was one major impact of India’s independence on its economy?