If heat Q is added reversibly to a system at temperature T and heat Q. is taken away from it reversibly at temperature T., then which one of the following is correct ?

If heat Q is added reversibly to a system at temperature T and heat Q.

1.	If heat Q is added reversibly to a system at temperature T and heat Q. is taken away from it reversibly at temperature T., then which one of the following is correct ?
Answer» `Q/T- (Q.)/(T.) =0` `Q/T - (Q.)/(T.) gt 0` `Q/T - (Q.)/(T.) lt 0` `Q/T - (Q.)/(T.) ` = CHANGE in INTERNAL energy of system Answer :A