Physics

What are the main characteristic of SI unit.


SOLUTION

It should have international acceptance.

It should be of a convenient size.

It should be accepted by general conference of the measurement and units.

The S.I system is a decimal system with each component a multiple of 10. E.g $$1 kg = 10^3$$ gram

The S.I units are coherent, that is there is only one unit for each quantity , and units of different quantities are combined without conversion factors.

The S. I system is a rational system.

View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Subjective Medium Published on 18th 08, 2020
Next Question
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 197
Enroll Now For FREE

Realted Questions

Q1 Subjective Medium
You are required to take out 200 ml of milk from a bucket full of milk. How will you do it?

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Single Correct Medium
A physical quantity is given by $$X=\left[ { M }^{ a }{ L }^{ b }{ T }^{ c } \right] $$. The percentage error in measurement of $$M,L$$ and $$T$$ are $$\alpha,\beta$$ and $$\gamma$$ respectively. Then, the maximum % error in the quantity $$X$$ is:
  • A. $$a\alpha +b\beta +c\gamma $$
  • B. $$a\alpha +b\beta -c\gamma $$
  • C. $$\cfrac { a }{ \alpha } +\cfrac { b }{ \beta } +\cfrac { c }{ \gamma } $$
  • D. None of these

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Single Correct Medium
Which of the following systems of units is not based on units of mass, length and time alone ?
  • A. SI
  • B. MKS
  • C. CGS
  • D. FPS

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Single Correct Medium
Four  positive charges $$ ( 2 \sqrt 2-1 )Q $$ are arranged at corner of square . another charge q is placed at the centre of the square. resultant force acting on each corner is zero if q is :
  • A. $$-7Q/4$$
  • B. $$-4Q/ 7$$
  • C. $$-Q$$
  • D. $$none$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Single Correct Medium
Light years is the unit of:
  • A. time
  • B. length
  • C. mass
  • D. none of these

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer