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Question 30111
JEE Physics · Easy

Errors and Measurements: Zero Error MCQ

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Zero ErrorEasyQuestion 30111

Question

A screw gauge shows a reading of +0.03 mm when jaws are fully closed. This is called:
  1. A
    Positive zero error
    Correct
  2. B
    Negative zero error
  3. C
    Instrumental error
  4. D
    Random error

Correct answer

Positive zero error

Explanation

When the instrument reads a positive value with nothing between the jaws, it has a positive zero error, and the correction (−0.03 mm) must be applied to readings.

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