Which of the following statement(s) about latent heat for a given substance is/are correct?

1. It is fixed at a given temperature.

2. It depends upon the temperature and volume.

3. It is independent of temperature and volume.

4. It depends on the temperature but independent of volume.

Which one of the following statement about the mass of a body is correct?

A ball balanced on a vertical rod is an example of

Which of the following statement(s) about specific heat of a body is/are correct?

1. It depends upon mass and shape of the body.

2. It is independent of mass and shape of the body.

3. It depends only upon the temperature of the body.