Assertion : A room can be cooled by opening the door of a refrigerator in a closed room.
Reason : Heat flows from lower temperature (refrigerator) to higher temperature (room).

Options

A. You can cool the room to a certain degree
B. You can cool it to the temperature inside the refrigerator
C. You ultimatelly warm the room slightly
D. You can neither cool nor warm the room

Answer

B

Explanation

Current in the loop `i=Q(omega)/(2pi)`, where `omega=alphat`, (where `omega` is angular velocity and `alpha` is angular accelation) and magnetic field `B=(mu_(0)i)/(2r)`.