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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.

Units and Measurement Test Online MCQs

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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?

6.67 x 10-11 kg

1.5 x 107 kg

6.67 x 10-8 kg

1.5 x 1010 kg

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):

± 4 mm

± 12 mm

± 6 mm

None of these

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:

[mass] -²

[length] -4

Angle

[time] -6

Question 3 of 20

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

A²T⁴L³M-1

A-²T-⁴L³M

A²T⁴L-³M-1

A0T0L0M0

Question 4 of 20

5. The product (PV) has the dimensions:

M1L2T-2

M1L2T4

M1L2T-3

M1L-1T-2

Question 5 of 20

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

One

1015

1016

Question 6 of 20

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

30%

10%

20%

40%

Question 7 of 20

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

104 n/m²

107 n/m²

106 n/m²

105 n/m²

Question 8 of 20

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

Watt/m-k

Joule/sec

Joule

Watt-kelvin/meter

Question 9 of 20

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

10-12 m

1010 m

1022 m

1026 m

Question 10 of 20

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

4.4 X 1025

2.25 X 1017

2.25 X 1023

2.25 X 1019

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:

M1L0T0

M0L0T0

M0L1T0

M1L2T-2

Question 12 of 20

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

Coefficient of viscosity

Compressibility

Surface tension

Modulus of rigidity

Question 13 of 20

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

Energy = kg – m/sec

Stress/Strain = newton/m²

Pressure = newton/m²

Surface tension = newton/m

Question 14 of 20

15. Neutron was discovered by:

Roentgen

Chadwick

Thomson

Yukawa

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:

0.2%

10%

Question 16 of 20

17. The dimensional formula of Hall coefficient h is:

M0L0A-2T-1

M0L3A-1T-1

M0L0AT

M0L3AT

Question 17 of 20

18. 1 kg f/cm² is equal to:

735.6 mm of Hg

1 mm of Hg

760 mm of Hg

100 mm of Hg

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:

50 divisions

25 divisions

10 divisions

20 divisions

Question 20 of 20

Test By Subject	Physics
Test By Topics	Physics Subject

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2021-01-16

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Units and Measurement Test Online MCQs

Units and Measurement Test Online MCQs

Physics

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