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Motion and Time — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceMotion and Time5 Marks
Question
Which of the following are not correct?
  1. The basic unit of time is second.
  2. Every object moves with a constant speed.
  3. Distances between two cities are measured in kilometres.
  4. The time period of a given pendulum is constant.
  5. The speed of a train is expressed in m/h.
✓

Answer

  1. Correct.
  2. Not correct.
  3. Correct.
  4. Not correct.
  5. Not correct.

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