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Question

# On the basis of details given about two measuring instruments, select the correct statement: (i) Vernier callipers having main scale division = 0.05 cm and vernier scale division = 2.4550cm (ii) Screw gauge having pitch 0.5 mm and its circular scale has 50 divisions

A

Both the instrument have same least count

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B

Least count of screw gauge is lesser than that of verniercallipers.

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C

Both the instruments have same least count but screw gauge can be more precise.

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D

Both the instruments have different least count and screw gauge is more precise.

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Solution

## The correct option is C Both the instruments have same least count but screw gauge can be more precise. L.C of vernier =M.S.D – V.S.D = [5 - 49]10−4 m = 0.01 mm L.C. of screw gauge =0.01mm

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