Frank Solutions for Class 9 Physics Chapter 1 Measurement - Download Free PDF with Solution
FAQs on Frank Solutions for Class 9 Physics Chapter 1 Measurement - PDF
1. What is a unit?
A unit is a quantity with a constant magnitude used to measure a physical quantity.
2. What is a unit system?
A unit system is a convention followed while measuring various physical quantities. For example, the CGS system.
3. What is the SI system?
The set of seven units decided to measure seven fundamental physical quantities worldwide is called the SI system.
4. What is a light year?
The distance travelled by a light ray in a vacuum in a year is called one light year.
5. Why do we follow the guidelines to write units?
We follow the guidelines of writing a unit of a physical quantity to avoid confusion. These guidelines are set to standardise the expression of physical quantities.
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