The least count of vernier callipers is 0.1 mm. The main scale reading before the zero of the vernier scale is 10
The least count of vernier callipers is 0.1 mm. The main scale reading before the zero of the vernier scale is 10 and the zeroth division of the vernier scale coincides with the main scale division. Given that each main scale division is 1 mm, the measured value should be expressed as
(a) 0.01 m (b) 1 cm (c) 1.0 cm (d) 1.00 cm
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The correct option is (d) 1.00 cm.
Explanation:
Length measured with vernier callipers
= Reading before the zero of vernier scale + Number of vernier divisions coinciding with any main scale division x Least count
= 10 mm + 0 x 0.1 mm = 10 mm = 1.00 cm
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