If the dimensions of a physical quantity are $[M^aL^bT^c]$, then it represents:
AForce, if $a=1, b=1, c=-2$
BPressure, if $a=1, b=-1, c=-2$
CEnergy, if $a=1, b=2, c=-2$
DAll of the above
Answer & Solution
Correct answer: D. All of the above
Force has dimensions $[MLT^{-2}]$, pressure has dimensions $[ML^{-1}T^{-2}]$, and energy has dimensions $[ML^2T^{-2}]$. Each of A, B, and C matches the stated exponents for the corresponding quantity, so all are correct.
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