JEE Main202125 Jul 2021Evening ShiftPhysicsUnits and DimensionsActual
The force is given in terms of time t and displacement x by the equation F = A cos B x + C sin D t The dimensional formula of A D B is:
Options
- AM 0   L   T - 1
- BML 2   T - 3
- CM 1   L 1   T - 2
- DM 2   L 2   T - 3
Correct answer
B. ML 2   T - 3
Step-by-step solution
[ A ] = MLT - 2 [ B ] = L - 1 [ D ] = T - 1 AD B = MLT - 2 T - 1 L - 1 AD B = ML 2   T - 3