TS EAMCET 04 May 2019 Shift 1 Solved Paper

Anon-conducting solid sphere has radius R and uniform charge density. A spherical cavity of radius R/4 is hollowed out of the sphere. The distance between center of sphere and center of cavity is R/2. If the charge of the sphere is Q after the creation of the cavity and the magnitude of electric field at the center of the cavity is E = K (

Q

4π∊0R2

), determine the approximate value of K