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Which of the following is the most preci...

Which of the following is the most precise instrument for measuring length?

A

a vernier callipers with 20 divisions on the sliding scale

B

a screw gauge of pitch 1mm and 100 divisions on the circular scale

C

an optical instrument that can measuere length to within a wavelength of light

D

all the above

Text Solution

Verified by Experts

The correct Answer is:
C
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