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The smallest division on the main scale ...

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

A

`20.5 mm`

B

`21.5mm`

C

`21.50mm`

D

`20.50mm`

Text Solution

Verified by Experts

`D = 2 xx 1 + 5 xx (10-9)/(100) = 20.5 mm` .
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