The smallest division on the main scale of a Vernier callipers is 1 mm and 10 vernier divisions coincide with 9main scale divisions. While measuring the diameter of a ring the zero mark of the vernier scale lies between 5.0 cm and 5.1 cm and the eighth division of the vernier scale coincides with a main scale division. The diameter of the ring is (in cm)

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answer is 5.08.

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Detailed Solution

LC=0.1mm=0.01cmReading = main scale reading + vernier scale reading = 5.0 + (8)(0.01) = 5.08 cm.

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