A hot body is placed in a closed room maintained at a lower temperature. Is the number of photons in the room increasing?

A block of ice is placed inside a closed room, then:

A hot body is suspended inside a room that is maintained at a constant temperature. The temperature difference between the body and the surrounding becomes half in a time interval t_(0) . In how much time the temperature difference between the body and the surrounding will becomes (1)/(4) the original value?

In intrinsic semiconductor at room temperature, the number of electrons and holes are

In intrinsic semiconductor at room temperature, the number of electrons and holes are

In an intrinsic semiconductor at room temperature, number of electrons and holes are

In an intrinsic semiconductor at room temperature number of electrons and holes are

A refrigator with its power on , is kept in a closed room with its door open . The temperature of the room will