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Error and Uncertainty

The random er...

Question

The random error which exists invariably in screw gauge is:

A

least count error

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B

zero error

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C

gross error

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D

backlash error

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Solution

The correct option is C backlash error
Backlash error occur in screw gauge when we try to rotate screw very fast to measure a reading. Then, instead of rotation, between different screws, there is a slipping which gives error.

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