Answer to Question #100961 in Classical Mechanics for Umar Musa

Question

In the case of a micrometer screw guage, the pitch of the screw is 0.5 mm. If there are 50 divisions on the head scale, the smallest distance that can be measured using this instrument is?
A. 0.5mm
B. 0.1mm
C. 0.005mm
D. 0.01mm

Answer 1

We are given pitch of the screw as 0.5 mm

Least count = Pitch/number of division on circular scale

Least count =0.5/50

Least count =0.01 mm

Hence the correct answer is option D