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In International System of units, there are seven base quantities whose units are defined. Which physical quantity has a prefix with its unit?
- a)Mass
- b)Thermodynamic temperature
- c)Luminous intensity
- d)Amount of substance
Correct answer is option 'A'. Can you explain this answer?
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In International System of units, there are seven base quantities whos...
The SI unit of mass is kilogram in which 'kilo' is the prefix.
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In International System of units, there are seven base quantities whos...
Base Quantities and Prefixes
In the International System of units, there are seven base quantities whose units are defined. These base quantities are:
1. Length
2. Mass
3. Time
4. Electric current
5. Thermodynamic temperature
6. Amount of substance
7. Luminous intensity
Out of these seven base quantities, only one physical quantity has a prefix with its unit, and that is mass.
Prefixes are commonly used in the International System of Units to represent multiples or submultiples of units. For example, kilogram (kg) is a unit of mass, and it represents 1000 grams (g). Similarly, millimeter (mm) is a unit of length, and it represents 0.001 meter (m).
Explanation
Mass is the only base quantity that has a prefix with its unit. The unit of mass is kilogram (kg), which represents 1000 grams (g). This means that one kilogram is equal to 1000 grams. The use of prefixes is important because it allows us to express very large or very small quantities in a manageable way.
For example, the mass of the sun is approximately 1.99 x 10^30 kg. Without the use of prefixes, we would have to write this number as 1,990,000,000,000,000,000,000,000,000,000 kg, which is very difficult to read and write. By using the prefix "kilo," we can express the mass of the sun as 1.99 x 10^33 g, which is much easier to read and write.
Conclusion
In conclusion, mass is the only base quantity that has a prefix with its unit in the International System of Units. The use of prefixes allows us to express very large or very small quantities in a manageable way.
In the International System of units, there are seven base quantities whose units are defined. These base quantities are:
1. Length
2. Mass
3. Time
4. Electric current
5. Thermodynamic temperature
6. Amount of substance
7. Luminous intensity
Out of these seven base quantities, only one physical quantity has a prefix with its unit, and that is mass.
Prefixes are commonly used in the International System of Units to represent multiples or submultiples of units. For example, kilogram (kg) is a unit of mass, and it represents 1000 grams (g). Similarly, millimeter (mm) is a unit of length, and it represents 0.001 meter (m).
Explanation
Mass is the only base quantity that has a prefix with its unit. The unit of mass is kilogram (kg), which represents 1000 grams (g). This means that one kilogram is equal to 1000 grams. The use of prefixes is important because it allows us to express very large or very small quantities in a manageable way.
For example, the mass of the sun is approximately 1.99 x 10^30 kg. Without the use of prefixes, we would have to write this number as 1,990,000,000,000,000,000,000,000,000,000 kg, which is very difficult to read and write. By using the prefix "kilo," we can express the mass of the sun as 1.99 x 10^33 g, which is much easier to read and write.
Conclusion
In conclusion, mass is the only base quantity that has a prefix with its unit in the International System of Units. The use of prefixes allows us to express very large or very small quantities in a manageable way.
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In International System of units, there are seven base quantities whose units are defined. Which physical quantity has a prefix with its unit?a)Massb)Thermodynamic temperaturec)Luminous intensityd)Amount of substanceCorrect answer is option 'A'. Can you explain this answer?
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