Physics · Units and Measurements
When both jaws of a Vernier Calliper touch each other, the zero mark of the Vernier scale is to the right of the zero mark of the main scale, and the 4th mark on the Vernier scale coincides with a main scale division. While measuring the length of a cylinder, the main scale reads 15 divisions and the 5th division of the Vernier scale coincides with a main scale division. The measured length of the cylinder is (Least count = 0.1 mm):
- 115.9 mm
- 215.5 mm
- 315.1 mm✓
- 415.4 mm
Correct answer
15.1 mm
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