ï»¿ If the error in the measurement of radius of sphere is 2%, then the error in the determination of volume of the sphere will be from Physics Units and Measurement Class 11 Manipur Board

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If the error in the measurement of radius of sphere is 2%, then the error in the determination of volume of the sphere will be

• 4%

• 6%

• 8%

• 2%

B.

6%

Â
Â
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What is measurement?

Measurement is the process of attaching a numeric value to an aspect of a natural phenomenon. Measurement is making the quantitative knowledge of a physical quantity.
1289 Views

What is the need of measurement?

To get the complete knowledge of any physical quantity, measurement is needed. Measurement of any physical quantity involves comparison with a certain basic, arbitrarily chosen, internationally accepted reference standard called unit. Knowledge without measurement is incomplete and unsatisfactory.
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Define physical quantity.

A measurable quantity in terms of which laws of Physics can be expressed is called physical quantity.

The result of a measurement of a physical quantity is expressed by a number accompanied by a unit.

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Define unit.

The quantity used as a standard of measurement is called unit.

Example: Unit of time is second.

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Give four examples of physical quantities.

Examples of Physical quantitie are force, mass, density and power.
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