Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Units and Measurements

Question:

Out of the following pairs , choose the pairs in which the physical quantities do not have identical dimensions?

Options:

Pressure and Young's Modulus

Planck's constant and Angular momentum

Impulse and Moment of force

Force and Rate of change of momentum

Correct Answer:

Impulse and Moment of force

Explanation:

1. Dimension of Pressure and Young's Modulus is same as young's modulus dimension is same as that of Stress.

2. Planck's constant = p$\lambda$ = dimension of angular momentum

3. Impulse = Ft , Moment of force = F.r so dimension of Impulse and Moment of force are different.

4. F = $\frac{dP}{dt}$ so dimension of force is same as rate of change of momentum.