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MediumAI TEST SUBJECT
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In a vernier calliper, when both jaws touch each other, zero of the vernier scale shift towards left and its 4th division coincides exactly with a certain division on main scale. If 50 vernier scale divisions equal to 49 main scale divisions and zero error in the instrument is 0.04 mm then how many main scale divisions are there in 1 cm?
A
5
B
40
C
10
D
20
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