Ritu wants to measure her height. The unit of length that she can use conveniently is:
A
m
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B
km
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C
mm
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D
cm
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Solution
The correct option is D cm It is convienent to measure the height of a person in centimetre (cm) as compared to metre (m). This is the most convenient unit because the magnitude of height is neither too large nor too small in cm.
Kilometre (km) is the unit used to measure large values of length whereas millimetre (mm) is the unit used to measure very small values of length.