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# Units and Measurement Test Online MCQs

 Test Name Units and Measurement MCQs Test Subject Physics Test Type MCQs Total Question 20 Total Marks 40 Total Time 20 Mints Test Help For Physics Subject Test Prep. MCAT and BDS Tes Prep. Engineering and B Tech Exams Prep. All Admissions Test. All Jobs Test prep.

Get all the questions and answers of Units and Measurement in MCQs Test over here. Attempt all these questions to check your knowledge and improve intellectual level. These questions are helpful to increase your knowledge about Unit and Measurement and also measuring instrument and their techniques.

## Physics

1. length were measured in meters and time in seconds but a new unit of mass were chosen in order to make G = 1. How many kilograms would be in this new unit of mass?

Question 1 of 20

2. If L = 36 ± 4 mm, B = 14 ± 2 mm, what is the maximum error possible in the determination of x = 2 (L - B):

Question 2 of 20

3. If E, G, J and m represent energy, universal gravitational constant, angular momentum and mass respectively, the dimensions of EJ²/m⁵G²:

Question 3 of 20

4. Dimension of 1/ɛ0 e²/hc, where e = electronic charge , h = planck constant, c = velocity of light:

Question 4 of 20

5. The product (PV) has the dimensions:

Question 5 of 20

6. Order of magnitude of light year expressed in meters is:

Question 6 of 20

7. In the above question, the tolerance when resistors are connected in parallels:

Question 7 of 20

8. A pressure of 10⁶ dyne/cm² is equivalent to:

Question 8 of 20

9. The unit of co-efficient of thermal conductivity is:

Question 9 of 20

10. The approximate distance of the nearest galaxy (Andromeda) is:

Question 10 of 20

11. The ratio of one kWh to one MeV is:

Question 11 of 20

12. When Bernoulli’s theorem is expressed as P/pg + ½ v²/g + h =  constant the dimensions of the constant on the right hand side of the equation are given as:

Question 12 of 20

13. The physical quantity which has the dimensional formula M-1L1T+2

Question 13 of 20

14. Which one of the following has been expressed in proper units:

Question 14 of 20

15. Neutron was discovered by:

Question 15 of 20

16. The measured mass and volume of a body are 22.42 gm and 4.7 cm³ with possible error 0.01 gm and 0.1 cc. The maximum error in density is about:

Question 16 of 20

17. The dimensional formula of Hall coefficient h is:

Question 17 of 20

18. 1 kg f/cm² is equal to:

Question 18 of 20

19. Error in the measurement of the radius of a sphere is 1%. Then error in the measurement of volume is:

Question 19 of 20

20. On the main scale of vernier calipers, each cm lengths is divided into 10 divisions. In the vernier has to have a least count of 0.005 cm, the vernier scale should have:

Question 20 of 20

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