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:

Which of the following is true if a third charge is placed near the conductor?

Surface charge on conductor will change Electric field inside the cavity will change Electric field inside the conductor will change Surface charge on cavity will change

Surface charge on conductor will change

since charges enclosed inside the cavities will not change so the field and potential for cavity will not vary.