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प्रश्न
Answer the following in detail.
Explain in detail why there was a need to standardize units.
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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.
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संबंधित प्रश्न
Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury
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State two characteristics of a unit.
Convert the following quantity as indicated:
150 kg = quintal
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 glass filled with water?
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 |
What are the multiples and sub multiples of mass?
Match the following:
| Column I | Column II | |
| 1. | FPS | Metre, kilogram, and second |
| 2. | CGS | Foot, pound, and second |
| 3. | MKS or SI | centimeter, gram, and second |
