Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Errors and Measurements/
Question 30131
JEE Physics · Medium

Errors and Measurements: Systematic vs Random MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Systematic vs RandomMediumQuestion 30131

Question

Which technique helps reduce random errors but NOT systematic errors?
  1. A
    Calibrating the instrument
  2. B
    Using a different instrument
  3. C
    Taking the average of many readings
    Correct
  4. D
    Checking zero error

Correct answer

Taking the average of many readings

Explanation

Averaging reduces random (statistical) errors. Systematic errors are directional and constant — they require calibration or correction to reduce.

Review Errors and Measurements notesStart timed chapter practice