Consider a uniformly charged spherical shell of radius R having surface charge density σ. The electric potential at internal points (r R) are respectively given by (where r is the distance of the point from the center of the sphere):

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?

Which of the following viceroys of India is associated with the 'Ilbert Bill' controversy?