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One micron length is equal to: 
1. 10 mm
2. 10-4 cm
3. 10-4 m
4. 104 cm

1 Answer

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Best answer
Correct Answer - Option 2 : 10-4 cm

The correct answer is option 2) i.e. 10-4 cm.

CONCEPT:

  • Metric prefix: A metric prefix is a unit prefix placed before a basic unit of measurement. It represents the multiple of the unit in a convenient way. 

​A few common metric prefixes used are as below:

Metric Prefix Symbol Value
peta P 1015
tera T 1012
giga G 109
mega M 106
kilo k 103
hecto h 102
deka da 101
deci d 10-1
centi c 10-2
milli m 10-3
micro μ  10-6
nano n 10-9
Angstrom Å 10-10
pico p 10-12

EXPLANATION:

One micron length = 1 micrometre = 1 μm = 1 × 10-6 m

We know,

1 m →  100 cm

∴ 1 × 10-6 m → \(\frac{100\: cm}{1\:m}\) × 10-6 m = 10-4 cm

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