state gov BSSC Laboratory Assistant Mock Test Series 2025 Physics Units, Dimensions and Measurements Accuracy, precision of instruments and errors in measurement
If the edge of a square is measured as (20 cm ± 0.06 cm), then the perimeter of the square will be
1
(80 cm ± 0.04 cm)
2
(80 cm ± 0.02 cm)
3
(400 cm ± 0.04 cm)
4
None