Q. An artificial satellite stays in the orbit around the Earth because
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Q. The working of the quartz crystal in the watch is based on the
Q. The snow on the mountains does not melt all at once when it is heated by the sun because:
Q. When a barometer is rising air pressure is
Q. Why does evaporation bring a fall in temperature?
Q. Red shift is an illustration of
Q. A fresh egg when placed in salt water will
Q. The nuclear particle having no mass & no charge, but only spin is
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