A screw gauge having 100 equal divisions and a pitch of length 1 mm is used to…
PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements
Problem
A screw gauge having 100 equal divisions and a pitch of length 1 mm is used to measure the diameter of a wire of length 5.6 cm. The main scale reading is 1 mm and the 47th circular division coincides with the main scale. Find the curved surface area of the wire in cm2 to the appropriate significant figure.