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In a vernier callipers, (N+1) divisions of vernier scale coincide with N divisions of main scale. If 1 MSD represents 0.1 mm , the vernier constant (in cm ) is:

Options

  1. A1 100(N+1)
  2. B100 N
  3. C10(N+1)
  4. D1 10 N

Correct answer

A. 1 100(N+1)

Step-by-step solution

V . C=M S D-V S D ....(1) given : (N+1) V S D=N MSD VSD = ( N N+1 ) MSD ....(2) From (1) and (2) aligned & V C=( MSD )- N N+1 ( MSD ) & = MSD (1- N N+1 )= MSD N+1 & = 0.01 N+1 = 1 100(N+1) aligned

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