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प्रश्न
Give two reasons for use of mercury as a barometric liquid.
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उत्तर
Two advantages of using mercury as barometric liquid:
(i) The density of mercury is greater than that of all the liquids, so only 0.76m height of mercury column is needed to balance the normal atmospheric pressure.
(ii) The mercury neither wets nor sticks to the glass tube therefore it gives the correct reading.
संबंधित प्रश्न
What do you mean by atmospheric pressure?
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Convert 1 mm of Hg into pascal. Take density of Hg = 13.6 x 103 kg m-3 and g = 9.8 m s-2 .
Briefly state the variations in the vertical distribution of pressure.
Select the correct option.
The atmospheric pressure on the earth’s surface is approximately
Air pressure is expressed in ______.
Define one atmosphere.
Give Reason for the following
Our ears pop in Airplanes.
Briefly explain the concept of variation of atmospheric pressure.
