JEE Main202229 Jun 2022Morning ShiftPhysicsUnits and DimensionsActual
In van dar Wall equation P + a V 2 V - b = R T ; P is pressure, V is volume, R is universal gas constant and T is temperature. The ratio of constants a b is dimensionally equal to :
Options
- AP V
- BV P
- CP V
- DP V 3
Correct answer
C. P V
Step-by-step solution
P + a V 2 V - b = n R T Dimensions of b should be equal to dimensions of V . Similarly, dimensions of a will be equal to dimensions of P V 2 . Therefore, dimensions of a b = P V 2 V = P V .