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# Which of the following statements is not true?

$(a)\;\text{In a screw gauge small value of pich gives more accuracy } \\(b)\;\text{The between linear motion of screw is called backlash error } \\(c)\;\text{Least count of screw gauge depends on the number of division on circular scale } \\(d)\;\text{length of a wire can not be measured using screw gauge }$

Least count does not depend on the number of circular scale divisions.
Hence c is the correct answer.