Question

The smallest division on the main scale of vernier callipers is 1mm, and 10 vernier divisions coincide with 9 main scale divisions. While measuring the diameter of a sphere, the zero mark of the vernier scale lies between 2.0 cm and 2.1cm and the fifth division of the vernier scale coincides with a main scale division. Then diameter of the sphere is

Answer 1

Answer:

Actual reading=main scale reading+vernier scale reading×least count=20+5×0.1=20.50 mm

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Answer 2

Answer:

the smallest division the main scale is 0.001 cm

which is a smallest division of the main scale of vernier calliper.

Explanation:

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