Advertisements
Advertisements
Question
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
Advertisements
Solution
An approximation or estimation is a reasonable guess about the measure of a physical quantity. For example, we use an approximation in adding salt to food while cooking. We use approximation when we try to figure out the time it would take to reach a certain place by car. In our daily life, we use approximations in many situations. They are useful as they save time. But, since they are not accurate in measurements, they should be avoided in scientific studies and experimentation.
APPEARS IN
RELATED QUESTIONS
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 piece of brass of volume 30 cm3 has a mass of 252 g. Find the density of brass in (i) g cm-3, (ii) kg m-3.
Express 36 km h-1 in m s-1
Select the correct alternative:
The symbol of degree celsius is
Define one metre, the S.I. unit of length. State it's one multiple and one submultiple.
Tick the most appropriate answer.
Which of the following is a fundamental physical quantity?
State if the following statement is true or false. Correct the statement if it is false.
The average of a group of observations is calculated by adding all the observations and dividing the sum by the number of observations.
Answer the following in short.
What is parallax error?
Answer the following in detail.
Explain in detail why railways and airlines use the 24-hour clock format.
Give reason for the following.
Body parts should not be used for correct measurements of an object.
