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Question

The length of a pencil is 8 cm. Identify the magnitude and the unit.

A
cm - magnitude, 4 - unit
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B
cm - magnitude, 8 - unit
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C
4 - magnitude, cm - unit
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D
8 - magnitude, cm - unit
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Solution

The correct option is D 8 - magnitude, cm - unit
The measurement of any quantity is always expressed in two parts; one magnitude and the other unit. Here, the length of the pencil is 8 cm which means that the measuring unit is cm and we need 8 such units to represent the entire length of pencil. Thus, the magnitude is 8 and the unit is cm .

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