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
l m3 =..........cm3
Define the term density of a substance.
A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 ml to 62 ml. Find the volume of silver piece.
A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.
Convert the following quantity as indicated:
1 ft = cm
Express in second:
5 hour 2 minute 5 second.
Answer the following in short.
Which institution in the world maintains the guidelines for using the SI units correctly?
What are derived quantities?
Your friend was absent from school yesterday. You are enquiring about his absence. He told that he had a fever and it was measured to be 100oC. Is it possible to have a 100oC fever? If he is wrong, try to make him understand.
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
