SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10
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100
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1000
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10 000
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Detailed explanation-1: -We know that the width can be converted to microns by dividing it by 10. Also, 1mm=1, 000 microns. The width of human hair is 100 microns. Therefore, the width of human hair is 100 microns.
Detailed explanation-2: -The size of a human hair strand is about 0.12 mm.
Detailed explanation-3: -The diameter of a hair (or a thin string or electrical wire) can be measured by scattering laser light on the hair. The scattering creates a diffraction pattern consisting of a line of light and dark spots (see the picture further down below).
Detailed explanation-4: -A human hair is approximately 70 microns, give or take 20 microns depending on the thickness of a given individual’s hair.
Detailed explanation-5: -in diameter, there are about 400, 000 cells per hair.