NEET Physics Vernier Caliper MCQ Question
What should be done if the vernier scale is not sliding smoothly over the main scale?
Apply machine oil or grease.
Tighten the screw tightly without pressure.
Adjust the position of the main scale.
Clean the vernier scale with water.
Correct Answer
Detailed Explanation
To ensure smooth operation of the vernier caliper, machine oil or grease should be applied if the vernier scale is not sliding smoothly over the main scale, as mentioned in the precautions.
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