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LOW OR FAST - NCERT

LOW OR FAST - NCERT

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cells. These clocks are called quartz clocks. The time measured by quartz clocks is much more accurate than that by the clocks available earlier. Units of time and speed The basic unit of time is a second. Its symbol is s. Larger units of time are minutes (min) and hours (h). You already know how these units are related to one another.

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