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What are the three requirements for selecting a unit of a physical quantity? - Physics

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Question

What are the three requirements for selecting a unit of a physical quantity?

Short Answer

Solution

The three requirements for selecting a unit of a physical quantity are

  1. It should be possible to define the unit without ambiguity.
  2. The unit should be reproducible.
  3. The value of units should not change with space and time.
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Chapter 1: Measurements and Experimentation - Exercise 1 (A) [Page 9]

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Selina Concise Physics [English] Class 9 ICSE
Chapter 1 Measurements and Experimentation
Exercise 1 (A) | Q 3 | Page 9
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