A Vernier caliper with no zero error is used to measure the diameter of a cylinder. It is found that the zero of the Vernier scale lies between 6.10 and 6.15 cm of the main scale. The Vernier scale has 50 divisions equivalent to 2.35 cm. The 24^th division of the Vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is

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6.137 cm

6.172 cm

6.174 cm

6.147 cm

answer is B.

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Detailed Solution

Least count = 1 M.S.D - 1 V.S.D = 0.05 - 0.047 = 0.003

Reading = 6.10 + 24 $\times$ 0.003 = 6.172

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