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In a vernier callipers, ten smallest div...

In a vernier callipers, ten smallest divisions of the vernier scale are equal to nine smallest division on the main scale. If the smallest division on the main scale is half millimeter, then the vernier constant is

A

0.5 mm

B

0.1 mm

C

0.05 mm

D

0.005 mm

Text Solution

Verified by Experts

The correct Answer is:
C
`10VD=9MD, 1VD=(9)/(10)MD`
`"Vernier constant"=1MD-1VD`
`=(1-(9)/(10))MD=(1)/(10)MD=(1)/(10)xx(1)/(2)=0.05mm`
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