Question

If n VSD coincide with (n-1) M.S.D when jaws of a standard Vernier Callipers are in direct contact, then zero correction of Vernier calliper is



a)(10±n)VSD
b)(1±n)VSD
c)(n±1)VSD
d)None of the above




please answer it correctly and quickly..​

Answer 1

Answer:

d is the correct options

Answer 2

Given info : If n VSD coincide with (n-1) M.S.D when jaws of standard Vernier caliper are direct method

To find : the zero correction of Vernier caliper is ..

solution : n VSD coincides with (n - 1) MSD

1 VSD = (n - 1)/n MSD = (1 - 1/n) MSD ...(1)

now least count = 1 MSD - 1VSD

from eq (1) we get,

= 1 MSD - (1 - 1/n) MSD

= 1/n MSD

now, zero corrections = 0 ± n × least count

= ± n × 1/n MSD

= ± 1MSD or, ± n/(n - 1) VSD

Therefore the correct choice is option (D) none of these.

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