Question

What precautions should be taken during the use of Symbols of SI units.

Answer 1

1)While writing a unit, only its singular form is used. For example, the mass of any substance should be written as kg not kgs. Distances should be expressed in km not in kms, e.g., ten kilogram is written as

10 kg (correct) 10kgs (wrong)

ii) The abbreviations of any unit does not have full stop (.) at the end, unless it appears at the end of a sentence. Therefore, no full stop is placed either in between or at the end of the symbol of the unit. For example,

Kg kg. cm cm.

(correct) (wrong) (correct) (wrong)

iii) One space is left between the last digit of a numeral and the symbol of the unit. For example,

10 m 10m and 5 g 5g

(Correct) (wrong) (correct) (wrong)

iv) Words and symbols should not be mixed. For example,

Kilogram per cubic metre kg/m3 kilogram/m3 kg per cubic metre

(correct) (correct) (wrong) (wrong)

v) With numerals, the symbols of the units should be written. For example,

100 cm one hundred cm 100 centimeters

(correct) (wrong) (wrong)

vi) The names of the units derived from people’s name are written in small letters. For example, the units named after Joule is written as joule (symbol: J). the unit of force named after Newton is written as Newton, (Symbol: N).

vii) The sign of degree (°) is not written when the Kelvin scale is employed. For example, temperature of 273 Kelvin is written as,

273 K 273°K

(correct) (wrong)

@skb

Answer 2

hi mate............

here's Ur answer........!!

Following precautions should be taken.....

1) No dot ( . ) should be put after the unit.

2) The spelling of all the units should be written in small letters.

3) The symbol of unit which is based on Scientist's name must be written in capital letter. For ex- The SI unit of force is Newton (N).

4) The symbols are never written in plural form.

5) The symbol of prefix is written jointly with symbol of unit without any space between them.

hope it helps⭐