Highly selective Backlog Qs for JEE MainPhysicsUnits and Dimensions
The dimensions of a b , in the equation P = a - t 2 b x , where P is pressure, x is distance and t is time, are
Options
- AM 2 L T - 3
- BM T - 2
- CM L 3 T - 1
- DL T - 3
Correct answer
B. M T - 2
Step-by-step solution
P = a - t 2 b x ⇒ P b x = a - t 2 ⇒ P b x = a = t 2 Or b = t 2 P x = T 2 M L - 1 T - 2 L = M - 1 T 4 ∴ a b = T 2 M - 1 T 4 = M T - 2