ï»¿ The dimensions of Â are from Physics Units and Measurement Class 11 Manipur Board

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Class 10 Class 12

The dimensions of Â are

• [L-1T]

• [LT-]

• [L-1/2 T1/2]

• [L1/2 T-1/2]

B.

[LT-]

This expression for speed of light and the dimensions of speed of light are [LT-1].

This expression for speed of light and the dimensions of speed of light are [LT-1].

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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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Give four examples of physical quantities.

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