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प्रश्न
What does a falling barometer indicate?
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उत्तर
A falling barometer indicates the approach of rain or storm or both.
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संबंधित प्रश्न
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
Give two reasons for use of mercury as a barometric liquid.
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
What is an aneroid barometer? Draw a neat and labelled diagram to explain its construction and working.
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
At sea level, the atmospheric pressure is 1.04 x 105 Pa. Assuming g = 10 m s-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere.
How is the reading of a barometer affected when it is taken to: A mine
What will be the effect on air pressure if the temperature drops? Why?
