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Units and Measurement
Question
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What is SI system of units?

Answer

The SI system of units is the system consisting of seven fundamental quantities. The seven fundamental quantities and their respective units are given below in the table. 

Physical quantity

1. Mass

2. Length

3. Time

4. Electric current

5. Luminous intensity

6. Temperature

7. Amount of substance

Fundamental Unit

Kilogram

Metre

Second

Ampere

Candela

Kelvin

Mole

Sponsor Area

Some More Questions From Units and Measurement Chapter

What is measurement?

What is the need of measurement?

Define physical quantity.

 

Give four examples of physical quantities.

Define unit.

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?