Which of the following system of units is NOT based on the unit of mas...
Understanding the Systems of Units
When discussing systems of units, it's crucial to know how they relate to fundamental quantities such as mass, length, and time. Let’s break down each system mentioned:
FPS (Foot-Pound-Second)
- This system is based on units of length (foot), mass (pound), and time (second).
- It is primarily used in the United States for everyday measurements.
CGS (Centimeter-Gram-Second)
- This system is based on units of length (centimeter), mass (gram), and time (second).
- It is commonly used in scientific contexts, particularly in physics and chemistry.
MKS (Meter-Kilogram-Second)
- MKS uses the meter for length, kilogram for mass, and second for time.
- It is often used in engineering and scientific applications.
SI (International System of Units)
- The SI system is the modern form of the metric system and includes additional base units beyond just mass, length, and time.
- Key base units include:
- Ampere (electric current)
- Kelvin (temperature)
- Mole (amount of substance)
- Thus, it is not solely based on mass, length, and time.
Conclusion
Therefore, the correct answer is option 'B' because the SI system incorporates additional fundamental units, making it more comprehensive than just the basic dimensions of mass, length, and time. This distinction highlights the SI system's versatility and its role in scientific standardization globally.
Which of the following system of units is NOT based on the unit of mas...
The SI system of units is a modern system and hence involves all the quantities that can't be derived using all the other quantities of the set. While the rest systems are old and local methods and hence are not scientifically accurate and explainable and thus only have three basic quantities while SI have 7.