Advertisements
Advertisements
Questions
What is measurement? How is a measurement expressed?
What is measurement?
Advertisements
Solution 1
Measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind.
The value obtained on measuring a quantity is called its magnitude. The magnitude of a quantity is expressed as numbers in its unit.
Solution 2
Measurement is the process of finding an unknown physical quantity by using a standard quantity.
RELATED QUESTIONS
Match the following:
| Column A | Column B |
| 1.Volume of a liquid | 1. kg `m^-3` |
| 2. Area of a leaf | 2. `m^3` |
| 3. S.I. unit of volume | 3. graph paper |
| 4. S.I. unit of density | 4. m `s^-1` |
| 5. S.I.unit of speed | 5. measuring cylinder |
Select the correct alternative
One litre is equal to :
A piece of paper of dimensions 1.5 m × 20 cm has area ______.
Select the correct alternative
The correct relation for speed is
How does the density of water changes when it is heated from 0°C to 4°C,
A car travels with a speed 12 m s”1, while a scooter travels with a speed 36 km h-1. Which of the two travels faster ?
A car travels a distance of 15 km in 20 minute. Find the speed of the car in km h-1.
Convert the following quantity as indicated:
20 cm = m
State if the following statement is true or false:
There are seven base units in the SI system.
Answer the following in detail.
State some common rules to write SI units correctly.
Fill in the blank.
1 kilometre is equal to ............... metres.
Answer the following in detail.
which is the most suitable unit for measuring the volume of a glass filled with water?
Solve the following numerical problem.
Amit dipped a stone tied with a string in a measuring cylinder filled with water. If the initial level of water was 56 mL and after dipping the stone the final level of water was 78 mL, find the volume of the stone.
Physical quantities are classified into ______ type.
What are the types of physical quantity?
What is the fundamental quantity? Give examples.
Write SI units for the fundamental quantity.
The density of a material in SI unit is 128 kg m-3. In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material is _____.
