Visit http://ilectureonline.com for more math and science lectures!

To donate:
http://www.ilectureonline.com/donate
https://www.patreon.com/user?u=3236071

The pitch of the screw gauge is 1mm and there are 100 divisions on the circular scale. When nothing is put in between the jaws, the zero of the circular scale lines 8 division is clearly visible while 72nd division on the circular scale coincides with the reference line. The radius of the wire=?
A) 1.64mm
B) 1.80mm
C) 0.82mm
D) 0.90mm

Previous video in this series can be seen at:
https://youtu.be/f4-6HJTNgy0
Next video in this series can be seen at:
https://youtu.be/jf2YoGH_E90