Advertisements
Advertisements
प्रश्न
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
Advertisements
उत्तर
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
संबंधित प्रश्न
Fill in the blank
36 km h-1 = _______ ms-1.
Select the correct alternative
The correct relation for speed is
State two characteristics of a unit.
Define one metre, the S.I. unit of length. State it's one multiple and one submultiple.
Convert the following quantity as indicated:
2500 kg = ………. metric tonne.
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.
Describe any two means by which the actual capacity’ of a measuring container can be made less than the correct value by a dishonest trader.
Answer the following in detail.
Which is the most suitable unit for measuring the volume of a cylinder of a car engine?
Give a reason for the following.
Measuring units are standardized.
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
