Advertisements
Advertisements
प्रश्न
Answer the following in detail.
Explain in detail why there was a need to standardize units.
Advertisements
उत्तर
The traditional units were not uniform as the length of a cubit, foot and handspan varied from person to person according to their body size. Similarly, there was no certainty that all grains were exactly the same weight. So these units could not be used for scientific measurements where accuracy was a prime concern. The development of a large number of systems of measurement also made it very difficult to conduct trade and commerce between different societies. Therefore, people felt the need to have standard units that could be used for accurate measurement and were accepted universally.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
1 g cm-3 = _______ kg m-3.
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 |
A boy travels with a speed of 10 m s-1 for 30 minute. How much distance does he travel ?
What is measurement? How is a measurement expressed?
Name four basic measurements in our daily life.
Convert the following quantity as indicated:
5 mg = ………. kg
Answer the following in a word or two or in a sentence.
Write the formula for finding the average of a given set of observations.
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
Solve the following numerical problem.
The body temperature of a patient on Monday was102 °F and on Tuesday it was 104°F. What was the rise in temperature during these two days?
What are the types of physical quantity?
