Question
Answer the following in detail.
State some common rules to write SI units correctly.
State some common rules to write SI units correctly.
✓
Answer
Guidelines for capitalization:
GuidelinPrefix Symbolses for Plurals
Guidelines for punctuation
| Guidelines | Examples | |
| Unit Names Unit Symbols Prefix Names Prefix Symbols | If a unit is derived from the name of a person, its name is always written in small letters. A unit not named after persons is written in small letters. The symbol used for a unit is normally written in small letters. If the symbol of the unit is derived from the name of a person, it is written in capital letters. If a unit is represented by more than one letter, the first letter of the symbol is capitalized. Prefix names are written in small letters unless they occur at the beginning of a sentence. No space or hyphen is used between the prefix and the unit name. So a prefix name and a unit name are taken together as a single word. Prefix symbols are attached to unit symbols without any space between them. Prefix symbols up to the kilo level are written in small letters but the ones with larger values are written in capital letters. | newton (not Newton), joule (not joule) metre (not Metre) second(not second) metre : m (not M), second :s (not S) newton : N (not n), amphere : A (not a) pascal :Pa, hertz :Hz milligram (not Milligram or milli-gram of a milligram), centimeter (not Centimetre or centimeter or) (centimeter) mg (milligram) M W (megawatt) |
| Guidelines | Examples |
| The plural form is used only when the unit is written in full. Symbols of units are never written in the plural. So, 's' is not added to the symbol of a unit. | 10 metres : 10 m(not 10 ms) 10 seconds : 10 s(not 10 ss) |
| Guidelines | Examples |
| A full stop is never put at the end of a unit symbol unless it occurs at the end of a sentence. | "It is 50 cm long." but not "It is 50 cm. long." |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What care would you take to increase the life span of a machine which you use?
Answer the following in detail.
Differentiate between contract and non-contract force. Support your answer with suitable examples.
Differentiate between contract and non-contract force. Support your answer with suitable examples.
Describe the method by which an iron bar can be made a magnet.
The diagram given below shows the three kinds of levers. Name the class of each lever and give one example of each class.
(a)
(b)
(c)
(a)
(b)
(c)
Describe in steps how would you measure the length of a pencil using a metre rule. Draw a diagram if necessary.
How does a pulley make work simpler ? Differentiate between a single fixed pulley and a single movable pulley.
Explain the formation of the image of a luminous object in a pinhole camera with the aid of a neat diagram.
A lever of length 100 cm has the effort of 15 kgf at a distance of 40 cm from the fulcrum at one end. What load can be applied at its other end?
How does a wheel help in moving the axle?
Describe an experiment to illustrate that like poles repel while the, unlike poles, attract.