﻿ The density of material in CGS system of units is 4g/ cm2.In a system of units in which unit of lengths is 10 cm and unit of mass is 100 g, the value of density of material will be  from Physics Units and Measurement Class 11 Manipur Board

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The density of material in CGS system of units is 4g/ cm2.In a system of units in which unit of lengths is 10 cm and unit of mass is 100 g, the value of density of material will be

• 0.4

• 40

• 400

• 0.04

B.

40

M = dV

d= M/L3

d = 4 g/cm3

M = dV

d= M/L3

d = 4 g/cm3

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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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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.
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Give four examples of physical quantities.

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Example: Unit of time is second.

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