Advertisements
Advertisements
प्रश्न
What is measurement? How is a measurement expressed?
What is measurement?
उत्तर १
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.
उत्तर २
Measurement is the process of finding an unknown physical quantity by using a standard quantity.
संबंधित प्रश्न
Fill in the blank
1 g cm-3 = _______ kg m-3.
Define the term density of a substance.
A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.
The density of copper is 8.9 g cm-3. What will be its density in kg m-3 ?
Select the correct alternative:
The symbol of degree celsius is
Name four basic measurements in our daily life.
Name two devices used to measure the short time interval of an event.
Answer the following in short.
What do you understand by the term measurement?
Answer the following in detail.
What are the fundamental physical quantities? Name any three fundamental physical quantities.
Answer the following in detail.
Explain in detail why there was a need to standardize units.
Fill in the blank.
1 kilometre is equal to ............... metres.
State if the following statement is true or false. Correct the statement if it is false.
1 m = 10,000 cm3
Answer the following in short.
What do you mean by a mean solar day?
Solve the following numerical problem.
The rainfall in a city on each day of a week is recorded below. Find the average rainfall for the week.
day | Mon | Tue | Wed | Thurs | Fri | Sat | Sun |
Rainfall |
1.2 | 10.3 | 5.5 | 0.0 | 13.5 | 7.0 | 1.0 |
Name some of the derived quantities.
Define mass Mention its unit.
Give some examples for scalar quantity.
What is physics?