Question:
The dimensions for pressure is:
The dimensions for pressure is:
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Pressure = Force/Area. Always divide force dimensions by \(L^2\).
Updated On: May 1, 2026
- \( MLT^{-2} \)
- \( ML^{-1}T^{-2} \)
- \( M^{-1}L^{-1}T^{-2} \)
- \( ML^{-1}T^{-1} \)
- \( MLT \)
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The Correct Option is B
Solution and Explanation
Concept: Pressure is defined as force per unit area.
\[
P = \frac{F}{A}
\]
Step 1: Dimensional formula of force
Force = mass × acceleration \[ [F] = M \times LT^{-2} = MLT^{-2} \]
Step 2: Dimensional formula of area \[ [A] = L^2 \]
Step 3: Substitute into pressure formula \[ [P] = \frac{MLT^{-2}}{L^2} \]
Step 4: Simplify \[ [P] = ML^{-1}T^{-2} \]
Step 1: Dimensional formula of force
Force = mass × acceleration \[ [F] = M \times LT^{-2} = MLT^{-2} \]
Step 2: Dimensional formula of area \[ [A] = L^2 \]
Step 3: Substitute into pressure formula \[ [P] = \frac{MLT^{-2}}{L^2} \]
Step 4: Simplify \[ [P] = ML^{-1}T^{-2} \]
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