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प्रश्न
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उत्तर
Mercury is used in barometer because
(i) It can be obtained in pure form.
(ii) It does not vaporizeat ordinary temperatures.
(iii) Its density is high and hence the length of the mercury column supported by atmospheric pressure is 76 cm which is practically possible.
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संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
The atmospheric pressure on earth surface is nearly .............. .
We do not feel uneasy even under enormous pressure of the atmosphere above as well as around us. Give a reason.
Why does nose start bleeding on high mountains?
Name the instrument used to measure atmospheric pressure.
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.
What is meant by atmospheric pressure?
The human lung is well adapted to breathe at a pressure of ______ k Pa.
