Question

explain the Effect on volume of temperature ​

Answer 1

The increase in temperature means an increase in Internal Energy that, in turn, means that the atoms of your material vibrates more thus displacing more from their equilibrium position and so needing more space/volume to vibrate. The overall volume of the object will be bigger.

Answer 2

The volume increases as the temperature increases, and decreases as the temperature decreases

so, volume is directly proportional to temperature