In an instrument, there are 25 divisions on the vernier scale which have length of 24 divisions on the main scale. 1 cm of main scale is divided in 20 equal parts. Find the least count.
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Explanation:
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The value of one main scale division = 1/20 cm
The number of divisions on vernier scale = 25
L.C = Value of one main scale division / Number of divisions on vernier scale
= (1/20) / 25 = 1/500 cm = 0.002 cm
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