1.

The electrostatic field due to a point charge depends on the distance r as `1/r^2`. Indicate which of the following quantities shows same dependence on r.A. intensity of light from a point sourceB. electrostatic potential due to a point chargeC. electrostatic potential at a distance r from the center of a charged metallic sphere, given rltradius of the sphereD. none of these

Answer» Correct Answer - A
a. `I prop 1/(r^2), V prop 1/r, V prop r^0` for metallic sphere, at inside, at inside point.


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