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The vernier scale of a travelling microscope has 50 divisions which coincide with 49 main scale divisions.

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The vernier scale of a travelling microscope has 50 divisions which coincide with 49 main scale divisions. If each main scale division is 0.5 mm. Calculate the minimum inaccuracy in the measurement of distance.

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Minimum inaccuracy = Vernier constant

= 1MSD - 1 VS.D

= 1 MSD - \(\frac{49}{50}\) MSD

= \(\frac{1}{50}\)(0.5mm) = 0.01mm

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