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प्रश्न
Answer the following in detail.
Why are multiples and submultiples of SI units required?
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उत्तर
Sometimes, the size of the SI unit is either too small or too big to measure a certain quantity. For example, a metre is too small a unit to measure the distance between two cities and too big a unit to measure the thickness of a wire. Hence, multiples and submultiples of units are required. Multiples are factors used to create larger forms whereas submultiples are factors used to create smaller forms of the SI units. For example, a centimetre is a submultiple and kilometre is a multiple of a metre.
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संबंधित प्रश्न
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 piece of paper of dimensions 1.5 m × 20 cm has area ______.
Select the correct alternative
The correct relation is :
What is measurement? How is a measurement expressed?
State two characteristics of a unit.
Convert the following quantity as indicated:
1 yard = m
Answer the following in short.
Which institution in the world maintains the guidelines for using the SI units correctly?
Answer the following in detail.
Which is the most suitable unit for measuring the volume of a cylinder of a car engine?
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
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 |
