While measuring the diameter of a wire with a screw gauge, the main scale reads 1 mm and the circular scale reads 42 divisions. The pitch is 1 mm and there are 100 divisions on the circular scale. The diameter of the wire is x/(50) mm. The value of x is

Question

Accepted Answer

(2) 71. L.C. =1/(100)=0.01 mm. Diameter =1+42×0.01=1.42 mm. x/(50)=1.42⇒ x=71.

While measuring the diameter of a wire with a screw gauge, the main scale reads 1 mm and the circular scale reads 42 divisions. The pitch is 1 mm and there are 100 divisions on the circular scale. The diameter of the wire is x/(50) mm. The value of x is

Step-by-step solution

Why the other options are wrong