Q.

Each division on the main scale is 1mm. Which of the following vernier scales will give least count equal to 0.01 mm?

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By Expert Faculty of Sri Chaitanya

9 mm divided into 10 divisions.

90 mm divided into 100 divisions

99 mm divided into 100 divisions

9.9 mm divided into 10 divisions

answer is 3,4.

(Detailed Solution Below)

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Detailed Solution

least count =MSD−VSD=1mm-0.99mm=0.01mm

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