A vernier callipers has 20 divisions on the vernier scale which coincide with 19 divisions on the main scale. The least count of the instrument is 0.1mm. The main scale divisions (in mm) are
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Solution
Formula used:L.C=1MSD−1VSD 19MSD=20VSD ∴ Least count =1MSD−1920MSD =120MSD
Given,Least count =0.1mm
Therefore, ⇒MSD=2mm
Final answer:2