Question

A screw gauge shows 8 division on circular scale below reference line when no object is placed.
Number of division on circular scale is 100 and in one complete rotation it advanced by 1mm when
a copper wire is measured with it, it complete one rotation and 72 division on circular scale. Find
radius of copper wire.

Answer 1

Explanation:

Answer:

0.005 mm

Solution :

Pitch = 4 upon 8

mm = 0.5 mm <br> L.C. = 0.5 upon 100

mm = 0.005 mm