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Question 5047
NEET Physics · Easy

Units & Measurements: Mixed Concepts MCQ

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Mixed ConceptsEasyQuestion 5047

Question

Which instrument is used for measuring very small lengths of the order of 10⁻⁵ m?
  1. A
    Vernier caliper
  2. B
    Metre scale
  3. C
    Screw gauge
    Correct
  4. D
    Optical microscope

Correct answer

Screw gauge

Explanation

A screw gauge (micrometer screw gauge) has a least count of 0.01 mm = 10⁻⁵ m, suitable for measuring very small lengths like wire diameter.

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