Plssss ans the que no. 12 VERY URGENT.
The correct nd well explaind will be marked the Brainlest.
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least count of Main scale = Length of the scale/Total no of divisions
= 10/200
= 1/20 = 0.05cm
Least count of vernier scale = Least count of main scale/No. Of divisions on vernier scale
= 0.05/25 = 0.002cm
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