10 divisions on the main scale of a Vernier calliper coincide with 11 divisions on the Vernier scale. If each division on the main scale is of 5 units, the least count of the instrument is :

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Given: 10 M S D = 11 V S D ⇒ 1 V S D = 10 11 M S D L C = 1 M S D - 1 V S D = 1 M S D - 10 11 M S D = 1 M S D 11 = 5 11 units

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