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Conversion of Units | General Awareness for SSC CGL PDF Download

In physics, converting units from one standard to another is a common requirement. For instance, you might need to convert miles to meters, hours to seconds, meters to inches, feet to meters, kilograms to grams, and so on. It's crucial to understand these conversions, especially when dealing with SI units, which are the standard in scientific contexts. For example, 1 meter equals 39.37 inches, and 1 kilometer equals 0.6214 miles.
When quantities are not in familiar formats, such as when converting to SI units, unit conversions are essential. You may encounter values in different units that need to be converted before performing calculations. The following section will provide a comprehensive guide to unit conversions.

Conversion of Units

This section focuses on converting units of measurement for various physical quantities. Before diving into conversions, it's important to understand fundamental and derived physical quantities and their units.

Fundamental Quantities and Derived Quantities

Physical quantities are classified into two main types:

  • Fundamental Quantities: These are primary quantities used to derive other physical quantities. Examples include mass, time, length, electric current, luminous intensity, temperature, and amount of substance.
  • Derived Quantities: Also known as secondary quantities, these are formed from fundamental quantities. For instance, speed is derived by dividing distance by time, making it a derived quantity. Similarly, volume is derived by multiplying length, breadth, and height.

Fundamental and Derived Units

Units for primary physical quantities are called fundamental units. Units formed from fundamental units are referred to as derived units. For example, speed is a derived quantity with the unit of meters per second (m/s), where meter and second are fundamental units, and the unit of speed is a derived one.

A Complete Unit Conversion Table

To address unit conversion problems in physics, it's helpful to use a conversion table. Such tables provide formulas for converting between various units of fundamental and derived physical quantities. The following tables summarize essential conversions, aiding in solving numerical problems involving unit conversions.

Basic Unit Conversion Table – Length

Conversion of Units | General Awareness for SSC CGLUnit Conversion List – Mass

Conversion of Units | General Awareness for SSC CGL

Units of Measurement Conversion Table – Volume

Conversion of Units | General Awareness for SSC CGL

Units and Conversions – Time

Conversion of Units | General Awareness for SSC CGL

Unit Conversion Table – Energy

Conversion of Units | General Awareness for SSC CGL

Unit Conversion Table- Power

Conversion of Units | General Awareness for SSC CGL

The document Conversion of Units | General Awareness for SSC CGL is a part of the SSC CGL Course General Awareness for SSC CGL.
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FAQs on Conversion of Units - General Awareness for SSC CGL

1. What are fundamental quantities and derived quantities in the context of unit conversion?
Ans. Fundamental quantities are basic physical quantities that cannot be defined in terms of other physical quantities, such as length, mass, time, electric current, temperature, amount of substance, and luminous intensity. Derived quantities are physical quantities derived from fundamental quantities through multiplication or division, such as speed, acceleration, force, energy, and power.
2. What is the difference between fundamental units and derived units?
Ans. Fundamental units are the units in which fundamental quantities are measured, such as meters for length, kilograms for mass, seconds for time, amperes for electric current, kelvin for temperature, moles for amount of substance, and candela for luminous intensity. Derived units are units obtained by combining fundamental units, such as meters per second for speed, newtons for force, joules for energy, and watts for power.
3. How can one convert units between different systems of measurement?
Ans. To convert units between different systems of measurement, one can use conversion factors that relate the units in the two systems. By multiplying the value in the original unit by the appropriate conversion factor, one can obtain the equivalent value in the desired unit.
4. What is the importance of understanding unit conversion in the context of competitive exams like SSC CGL?
Ans. Unit conversion is a crucial skill in competitive exams like SSC CGL as it often involves questions that require converting units from one system to another. Being able to accurately and efficiently convert units can help save time and ensure correct answers in exam scenarios.
5. Can you provide an example of a complete unit conversion table that can be useful for SSC CGL preparation?
Ans. A complete unit conversion table includes conversions for length, mass, time, area, volume, temperature, and other common units. It helps students quickly reference and convert units as needed during exam preparation for SSC CGL.
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