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Chapter 1: Problem 55

Which of the following symbol of unit does not follow practical norms for the use of SI system? (a) \(\mathrm{Kg}\) (b) \(\mathrm{kg}\). (c) \(\mathrm{k}\) (d) \(\mathrm{A}\)

Short Answer

Expert verified
The correct answer is (a) \(\mathrm{Kg}\), as it presents an incorrect representation of an existing SI unit, whereas option (c) is just a prefix without a unit.

Step by step solution

01

Analyze Option (a) \(\mathrm{Kg}\)

In the SI system, the unit symbol for mass is "kg" (with a lowercase "k" and lowercase "g") and stands for kilograms. In this option, the "K" is capitalized, making it incorrect according to SI standards.
02

Analyze Option (b) \(\mathrm{kg}\)

This option presents the correct symbol for the unit of mass, as it is written with a lowercase "k" and lowercase "g". This follows the SI system norms.
03

Analyze Option (c) \(\mathrm{k}\)

This option shows only "k," which is a common prefix in the SI system, meaning "kilo" or 1000 units. However, it is not a complete symbol for any specific unit in the SI system, so this option does not fit the standards.
04

Analyze Option (d) \(\mathrm{A}\)

Option (d) presents the symbol "A", which represents the SI unit for electric current called amperes. This is the correct symbol according to the SI system standards.
05

Determining the Answer

After analyzing all options, we find that option (a) \(\mathrm{Kg}\) and option (c) \(\mathrm{k}\) do not follow the practical norms for the use of the SI system. However, since we can only choose one answer, the best option is (a) \(\mathrm{Kg}\) because it presents an incorrect representation of an existing SI unit, whereas option (c) is just a prefix without a unit.

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