NEET Physics Vernier Caliper MCQ Question
Which of the following statements about the Vernier Caliper is correct?
A positive zero error indicates that the observed reading will be less than the actual reading.
The zero error must always be added to the observed reading to obtain the true reading.
Zero error can be positive or negative depending on the position of the zero of the Vernier scale relative to the main scale.
The Vernier scale is used only for measuring the diameter of cylindrical objects.
Correct Answer
Detailed Explanation
Statement C is correct as zero error can indeed be positive or negative based on the position of the Vernier scale's zero. Statement A is incorrect because a positive zero error results in an observed reading that is more than the actual reading. Statement B is misleading because negative zero error is subtracted from the observed reading. Statement D is false since the Vernier scale can measure various dimensions, not just diameters.
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