Home » Past Questions » Physics » When heat energy is added to a system which of the following observations usuall...

When heat energy is added to a system which of the following observations usuall...

When heat energy is added to a system which of the following observations usually occur:

(1) The internal energy of the system increases;

(2) Work may be done on the surroundings;

(3) The volume of system is directly proportional to the temperature.

1 and 2 only

1, 2 and 3

3 only

None of the above.

The correct answer is A.

Discussion