Unit , Dimensions & Measurements Test Online MCQs

1. Which of the following pairs does not have similar dimensions?

2. The dimensions of Planck’s constant are

3. The dimensional formula for torque is:

4. The dimensions of torque are

5. The magnetic moment has dimensions of

6. Dimensions of electrical resistance are

7. Which if the following pair of quantities do not have the same dimensions:

8. The activity of radioactive sample is measured as 9750 counts per minute at t = 0 and as 975 counts per minute at t = 5 minutes, the decay constant is approximately

9. In ₈₈Ra²²⁶ nucleus there are

10. Dimensions of coefficient of viscosity is

11. Which of the following physical quantities do not have same dimensions?

12. What is the dimensions of impedance?

13. The dimensional formula of the constant a in Vander Wall’s gas equation (P + a/V²)(V-b) =RT is:

14. What is the dimensional formula of gravitational constant?

15. Given that . Two out of the three vectors are equal in magnitude. The magnitude of the third vector is √2 times that of the other two. Which of the following can be the angles between these vectors?