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A vernier scale is used in a fortin b...

A vernier scale is used in a fortin barometer 10 VSD coincides with 19 MSD and 1 MSD =1 mm and VSD is further divided in two .Least count is -

A

0.1 cm

B

.05 mm

C

1 mm

D

0.02mm

Text Solution

Verified by Experts

The correct Answer is:
B
`1 VSD =(19)/(2xx10)MSD`
`LC =1 MSD - 1 VSD =1 - (19)/(20)mm`
`=(1)/(20)mm =0.5 mm`
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