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. [AIEEE 2011] |
The diameter of wire from the above data is |
A) 0.005 cm
B) 0.52 cm
C) 0.052 cm
D) 0.026 cm
Correct Answer: C
Solution :
[c] Diameter = main scale reading \[+1.c.\times \] circular scale reading |
\[=0+52\times \frac{1}{100}mm\] |
\[=0.52mm=0.052\,cm\] |
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