Question 212: Units , Dimensions and Error Analysis

Question

A screw gauge gives the following reading when used to measure the diameter of a wire.
Main scale reading : 0 mm
Circular scale reading : 52 divisions
Given that 1 mm on main scale corresponds to 100 divisions of the circular scale.
The diameter of wire from the above date is:

Accepted Answer

Least count of screw gauge
= $${{Pitch} \over {Number\,of\,division\,on\,circular\,scale}}$$
= $${1 \over {100}}mm$$
= 0.01 mm
Diameter of the wire = M.S.R + C.S.R $$ 	imes $$ L.C
= 0 + 52 $$ 	imes $$ 0.01
= 0.52 mm
= 0.052 cm

Answer

0.052 cm

Answer

0.026 cm

Answer

0.005 cm

Answer

0.52 cm

Units , Dimensions and Error Analysis

A screw gauge gives the following reading when used to measure the diameter of a wire. Main scale reading : 0 mm Circular scale reading : 52 divisions Given that 1 mm on main scale corresponds to 100 divisions of the circular scale. The diameter of wire from the above date is:

Choose the correct answer: