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A student performs a experiment of measu...

A student performs a experiment of measuring the thickness of a slab with a vernier calliper whose 50 division of the vernier scale are equal to 49 divisions of the main scale . He noted that zero of the vernier scale is between 7.00cm and 7.05 cm mark of the main scale and `23^(rd)` division of the vernier scale exactly coinclude with the main scale. The measured value of hte thikness of the given slab using the calliper will be :

A

`7.73 cm`

B

`7.23 cm`

C

`7.023 cm`

D

`7.073 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
Least count = 1 MSD - 1VSD
`= 5 xx 10^(-2) - 49/50 xx 5 xx 10^(-2)`
Thickness = `7 + 23 xx 10^(-3) = 7.023 cm`
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