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JEE Main20245 Apr 2024Evening ShiftPhysicsExperimental PhysicsActual

A vernier callipers has 20 divisions on the vernier scale, which coincides with 19^ th division on the main scale. The least count of the instrument is 0.1 ~mm . One main scale division is equal to _____ mm .

Options

  1. A0.5
  2. B2
  3. C5
  4. D1

Correct answer

B. 2

Step-by-step solution

aligned & 20 VSD =19 MSD & 1 VSD = 19 20 MSD & L.C. =1 MSD -1 VSD & 0.1 ~mm =1 MSD - 19 20 MSD & 0.1= 1 20 MSD & 1 MSD =2 ~mm aligned

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