﻿ The velocity v of a particle at time t is given by  where a, b and c are constants, The dimensions of a, b and c are respectively: from Physics Units and Measurement Class 11 Manipur Board

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The velocity v of a particle at time t is given by where a, b and c are constants, The dimensions of a, b and c are respectively:

• • • • A. According to principle of homogeneity of dimensions, the dimensions of all the terms in a physical expression should be same.
The given expression is From principle of homogeneity According to principle of homogeneity of dimensions, the dimensions of all the terms in a physical expression should be same.
The given expression is From principle of homogeneity 502 Views

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.

878 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.
825 Views

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

Define unit.

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

Example: Unit of time is second.

1172 Views

Give four examples of physical quantities.

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