Dimensional analysis MCQ: Pick the pair whose quantities do NOT have identical dimensions. Compare each pair using M–L–T dimensional formulae and identify the mismatch. Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
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AForce and weight
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BPressure and stress
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CAngular momentum and Planck's constant (h)
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DPower and torque
Answer
Correct Answer: Power and torque
Explanation
Check each pairForce vs weight ⇒ both MLT-2.Pressure vs stress ⇒ both ML-1T-2.Angular momentum vs Planck's constant ⇒ both ML2T-1.Power vs torque ⇒ ML2T-3 vs ML2T-2 (different).
Final AnswerPower and torque