Question

THERE ARE FOUR SPHERES A,B,C,ANFD D .SPHERE A REPELS B AND ATTRACTS SPHERE CREPELS PHEE D

Answer 1

Answer:

Correct option is

C

B

Rate of loss of heat:

dt

dQ

=ms

dt

dT

RHS has product of mass and specific heat. This is max for sphere B ( 3 × 6 )

Hence, sphere B has fastest rate of cooling.