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PhysicsJEE Main 23 Jan 2026, Shift 1·Q4·MCQ·Easy–moderate

Units and Measurements · Significant figures & errors

Four persons measure the length of a rod as 20.00 cm, 19.75 cm, 17.01 cm and 18.25 cm. The relative error in the measurement of average length of the rod is:
  1. (1)0.24
  2. (2)0.18
  3. (3)0.06
  4. (4)0.08

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