Question Detail
Question
Which of the following pairs of physical quantities does not have the same dimensional formula?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Tension is force [MLT⁻²]. Surface tension is force per length [MT⁻²]. Others: work and torque both [ML²T⁻²]; angular momentum and Planck's constant both [ML²T⁻¹]; impulse and momentum both [MLT⁻¹].
Hint
Surface tension has an extra L⁻¹ compared to tension.