1)A screw gauge can be used to measure in the range of ------------
a. 10-4m b.10-10m c.10-5m d.10-9m
2)give the ranges 1f=___m, 1 angstrom=____m
Answers
A screw gauge can be used to measure in the range of 10^-5m.
Explanation:
Screw gauge is an instrument used to accurately measure the thickness of a sheet of metal. The accuracy of a micrometer screw gauge is 0.01mm or 0.001cm. This means that the smallest distance that a micrometer screw gauge can measure is 0.01mm or 0.001cm.
So range of measure of a micrometer screw gauge = 0.01 mm. When expressed in meters, 0.01mm = 10^-5 m.
Therefore, a screw gauge can be used to measure in the range of 10^-5m.
Option C is the answer.
Explanation:
Among the four options given, the correct option is C.
A screw gauge can be used to measure in the range of 10-5m. This is called the least count of gauge.
Least count is defined as the smallest accurate reading which can be measured by any measuring instrument. Least count is defined as pitch divided by measurement number.
In most of the measuring instruments, least count is stamped on the tool.