Question

The circular scale of a micrometer has `200` divisions and pitch of `2 mm`. Find the measured value of thickness of a thin sheet.
.
A. `3.41 mm`
B. `6.41 mm`
C. `3.46 mm`
D. `3.51 mm`

Answer 1

Correct Answer - B
Least count `= ("pitch")/("No. of divisions")=(2)/(200)=0.01mm`, Reading `= 3 xx 2+(46-5)(0.01)=4.41mm`.