Question

A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair in the field of view of the microscope is 3.5 mm. What is the estimate on the thickness of hair ? *

(1) 0.035 mm

(2) 0.35 mm

(3) 0.45mm




guys ek answer bta do plz....
or Shi btana yrr
(4) 0.045mm​

Answer 1

Answer:

option A is the right answer

Explanation:

Magnification=  100.

Avg. width in Microscope =3.5 mm

So, 

Original width = 1003.5mm=0.035mm

Answer 2

Answer:

0.45mm is the answer

Explain:

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