Question

In an instrument there are 25 divisions on the vernier scale which have length of 24 divisions of the main scale. 1cm on main scale is divided in 20 equal parts find the least count

Answer 1

Answer:

The value of one main scale division = 1/20 cm

The number of division on vernier scale = 25

As L. C. = value of one main scale division /number of division on vernier scale

So =[1/20]/25=1/500=0.002 cm Ans.

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