Manipal MET2014PhysicsExperimental Physics
The circular divisions of shown screw gauge are 50 . It moves 0.5 mm on main scale in one rotation. The diameter of the ball is
Options
- A2.25 mm
- B2.20 mm
- C1.20 mm
- D1.25 mm
Correct answer
C. 1.20 mm
Step-by-step solution
Zero error =5 0.5 50 =0.05 ~mm Actual measurement aligned & =2 0.5 ~mm +25 0.5 50 -0.05 ~mm & =1 ~mm +0.25 ~mm -0.05 ~mm =1.20 ~mm aligned