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Introduction to Physics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsIntroduction to Physics4 Marks
Question
A physical quantity is measured and the result is expressed as nu where u is the unit used and n is the numerical value. If the result is expressed in various units then:
  1. $\text{n}\propto\text{size of u}$
  2. $\text{n}\propto\text{u}^2$
  3. $\text{n}\propto\sqrt{\text{u}}$
  4. $\text{n}\propto\frac{1}{\text{u}}$
✓

Answer

  1. $\text{n}\propto\frac{1}{\text{u}}$
Explanation:

The larger the unit used to express the physical quantity, the lesser will be the numerical value.

Example: 1kg of sugar can be expressed as 1000g or 10000mg of sugar.

Here, g (gram) is the larger quantity as compared to mg (milligram), but the numerical value used with gram is lesser than the numerical value used with milligram.

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Image
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