Advertisements
Advertisements
प्रश्न
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Describe a simple experiment to illustrate that air exerts pressure.
Write the numerical value of the atmospheric pressure on the surface of earth in pascal.
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
Give reasons for the following:
The Westerlies in the Southern Hemisphere blow with greater force than those in the Northern Hemisphere.
State briefly, how and why the atmospheric pressure of a place varies with the altitude. Draw an approximate graph to illustrate this variation.
Clouds float in atmosphere because of their low ______.
Define High pressure
The air pressure at sea level is referred to as ______.
