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You are given two different vernier call...

You are given two different vernier callipers `A` and `B` haiving `10` divisions on vernier scale that coincide with `9` divisions on the main scale each. If `1 cm` of main scale `A` is divided into `10` parts and that of `B` in `20` parts, then least count of `A` and `B` are

A

`0.001 cm` and `0.005 cm`

B

`0.01 cm` and `0.05 cm`

C

`0.01 cm` and `0.005 cm`

D

`0.01 cm` and `0.001 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
(`A`) Least count `=1-(9)/(10)`
`=(1)/(10)mm`
`=0.1mm`
`=0.01cm`
(`B`) Least count `=1-(1)/(10)`
`=(10)/(20)mm`
`=0.5mm`
`=0.05cm`
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