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Measurement of Physical Quantities — Science STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7ScienceMeasurement of Physical Quantities3 Marks
Question
Explain the need for accurate measurement and the devices to be used for that.
✓

Answer

  1. Measurement of substances that are precious or of great importance and used in very small quantities is done meticulously and accurately.
  2. Due to advancements in technology, devices that measure very small magnitudes of quantities like distance, mass, time and temperature are available now.
  3. e.g. distance and time in connection with very important sports competitions, mass of gold, body temperature etc.
  4. Devices to be used for this are thermometer, digital balance (Analytical balance) etc.

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