1. what is the zero measurement of the micrometer? 2. what is the measurement fo

Question

1. what is the zero measurement of the micrometer?

2. what is the measurement for the hair?

3. what is the diameter of the hair?

4. what is the absolute uncertainty in the measurement of the hair?

The left hand picture show a "zero measurement" with the same kind of metric screw micrometer you will use in this Lab. Its operation is identical to the operation of the metric screw micrometer described in the Lab manual. The "zero measurement" records the reading of the micrometer after the gap between the (already cleaned) anvil and spindle has been closed. The righthand picture shows the same micrometer being used to measure the diameter of a hair.

Explanation / Answer

the given micro meter has negative error.so, the correction is positive.

least count for this instrument is, L.C = 0.01 mm

a) -1*0.01 = -0.01 mm

b) 8*0.01 = 0.08 mm

c) d = 0.08 + 0.01 = 0.09 mm

d) -0.01 mm

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