Question

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Answer 1

Answer:

Magnification of microscope = 100

Average thickness of human hair observed through microscope over 20 observations = 3.5 mm

→ 3.5 × 10^-3 m

According to definition of magnification,

Magnification = Observed thickness / Real thickness

100 = 3.5 × 10^-3 / Real Thickness

Real thickness = 3.5 × 10^-3 / 100

Real thickness = 35 × 10^-6 m

Real thickness = 35 úm

:. The thickness of human hair estimated by the student is 35 microns.