Unit , Dimensions & Measurements Test Online MCQs

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

2. The dimensional formula for torque is:

3. The dimensions formula of magnetic flux is?

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

5. The dimensions of torque are

6. The speed of light (c), gravitational constant (G) and plank’s constant (h) are taken as fundamental units in a system. The dimensions of time in this new system should be

7. Using mass (M), length (L), time (T) and current (A) as fundamental quantities, the dimensions of permeability are:

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. Velocity of light is equal to

11. What is the dimensions of impedance?

12. Dimensions of coefficient of viscosity is

13. Using mass (M), length (L), time (T)and current (A) as fundamental quantities, the dimensional formula of permittivity is:

14. 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? 

15. The magnetic moment has dimensions of