Question

if in a circular vernier callipers value of 1 MSD is 1' and 30th vernier division coincide with 29th MSD .calculate least count of instrument

Answer 1

Answer:

1/30

Explanation:

if in a circular vernier callipers value of 1 MSD is 1' and 30th vernier division coincide with 29th MSD .calculate least count of instrument

MSD = Main Scale Division

VSD = Vernier Scale Division

29th MSD = 30 * VSD

=> VSD = 29MSD/30

MSD = 1

=> VSD = 29/30

Least Count = MSD - VSD =  1 - 29/30  = 1/30