Question 177: Units , Dimensions and Error Analysis

Question

If the screw on a screw-gauge is given six
rotations, it moves by 3 mm on the main scale.
If there are 50 divisions on the circular scale
the least count of the screw gauge is :

Accepted Answer

Pitch = $${3 \over 6}$$ mm = 0.5 mm
Least count = $${{0.5} \over {50}}$$ mm
= $${1 \over {100}}$$ = 0.01 mm = 0.001 cm

Answer

0.001 mm

Answer

0.01 cm

Answer

0.02 mm

Answer

0.001 cm

Units , Dimensions and Error Analysis

If the screw on a screw-gauge is given six rotations, it moves by 3 mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is :

Choose the correct answer: