A solution containing components A and B follows Raoult's law : -

A solution that obeys Raoult's law over the whole range of composition is an ideal solution.
In an ideal solution, the A–B interactions are of the same strength as the A–A and B–B interactions. So $\Delta H_{mix} = 0$ and $\Delta V_{mix} = 0$.
If A–B attractions are stronger, the solution shows negative deviation; if weaker, positive deviation. A change in volume on mixing also means non-ideal behaviour.
So the solution follows Raoult's law when the attraction forces remain the same (A–A, B–B and A–B alike).