Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

Which of the following pair of physical quantities have identical dimension?
Options
A Force and rate of change of linear momentum
Correct Answer
B Impulse and moment of force
C Planck's constant and Power
D Pressure and Density
Correct Answer

Option A is the correct answer.

Detailed Explanation

Force [MLT⁻²] and rate of change of momentum [MLT⁻²] are identical. Impulse [MLT⁻¹] and moment of force [ML²T⁻²] differ. Planck's constant [ML²T⁻¹] and power [ML²T⁻³] differ. Pressure [ML⁻¹T⁻²] and density [ML⁻³] differ.

Hint

Check dimensional formulas.

Question Info