Why do we need to consider significant digits in measurements?

Significant digits provide information about the precision of a measurement. They indicate how exact a measurement is and help communicate the uncertainty of a value. For instance, in scientific calculations, maintaining the correct number of significant digits ensures accurate results, avoiding overestimation or underestimation of precision.

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  16. Q.1 How does physics play an important role in our life?
  17. Q.2 Estimate your age in minutes and seconds.
  18. Q.3 What base quantities are involved in these derived physical quantities; force, pressure, power and charge.
  19. Q.4 Show that prefix micro is thousand times smaller than prefix milli.
  20. Q5. Justify that displacement is a vector quantity while energy is a scalar quantity.