Highly selective Backlog Qs for JEE MainPhysicsUnits and Dimensions
If the dimensions of a physical quantity are given by [ M ^ a L ^ b T ^ c ] , then the physical quantity will be :
Options
- AForce if a=0, b=-1, c=-2
- BPressure if a =1, ~b =-1, c =-2
- CVelocity if a=1, b=0, c=-1
- DAcceleration if a=1, b=1, c=-2
Correct answer
B. Pressure if a =1, ~b =-1, c =-2
Step-by-step solution
[ P ]= F A = [ MLT ⁻² ~L ^2 ]= [ ML ⁻¹ ~T ⁻² ]