JEE Advance - Physics (2006 - No. 2)
In a screw gauge, the zero of main scale coincides with the fifth division of circular scale in figure (i).The circular division of screw gauge is 50. It moves 0.5 mm on main scale in one rotation.The diameter of the ball in figure (ii) is
2.25 mm
2.20 mm
1.20 mm
1.25 mm