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

Question:

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

  1. $0.001 \mathrm{~cm}$

  2. $0.02 \mathrm{~mm}$

  3. $0.01 \mathrm{~cm}$

  4. $0.001 \mathrm{~mm}$

JEE Main Previous Year Single Correct Question of JEE Main from Physics Physical World, Units and Measurements chapter.

JEE Main Previous Year 9 Jan. 2020 I


Correct Option: 4

Solution:

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