Question

A student measured the diameter of small steel ball using a screw least Count 0.001 cm. the main scale is 5 mm & a zero of circular scole division​

Answer 1

Explanation:

student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of –0.004 cm, the correct diameter of the ball is. 0.521 cm.