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Question 30192
JEE Physics · Medium

Errors and Measurements: Instruments — Choice MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Instruments — ChoiceMediumQuestion 30192

Question

For measuring an angle of a crystal (~ 1 minute of arc precision required), the appropriate instrument is:
  1. A
    Vernier caliper
  2. B
    Spectrometer
    Correct
  3. C
    Screw gauge
  4. D
    Metre scale

Correct answer

Spectrometer

Explanation

A spectrometer with a vernier on the circular scale can measure angles to arc-minute precision, needed for crystal angle and prism experiments.

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