Two spherical cavities (A and B) of radii x and y are hollowed out from the interior of a conducting sphere of radius R. Charges q1 and q2 are placed at centre of cavities A and B. The situation is depicted in the figure given:

What are the fields inside the cavity A and cavity B respectively? Where rA and rB are the unit vector from center of cavities respectively.
Answer & explanation
Correct answer: option 2
since charges are enclosed inside the cavities, so use gauss law.