Physical World Units and Measurements - Result Question 40

41. A screw gauge has least count of $0.01 mm$ and there are 50 divisions in its circular scale. The pitch of the screw gauge is :

[2020]

(a) $0.25 mm$

(b) $0.5 mm$

(c) $1.0 mm$

(d) $0.01 mm$

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Answer:

Correct Answer: 41. (b)

Solution:

  1. (b) Least count of screw gauge $=0.01 mm$ Least count

Pitch

$\overline{\text{ No. of divisions on circular scale }}$

$\Rightarrow 0.01 mm=\frac{\text{ Pitch }}{50}$

$\Rightarrow$ Pitch $=0.5 mm$