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संबंधित प्रश्न
Explain why holes are made in hanging banners and hoardings.
The atmospheric pressure at sea level is nearly
Name the physical quantity which is expressed in the unit 'atm'. State its value in pascal.
A partially inflated balloon is placed inside a bell jar connected to a vacuum pump. On creating vacuum inside the bell jar, balloon gets more inflated. How does the pressure change: increase, decrease or remains same, inside the (a) bell jar, (b) balloon?
Why is the barometric height used as unit to express the atmospheric pressure?
How will you show that there is vacuum above the surface of mercury in a barometer? What name is given to this vacuum?
What does a falling barometer indicate?
What does low pressure and high pressure lead to?
Figure shows a child blowing air with a straw near the opening of another straw which has its other end in a soft drink bottle. It was observed that the level of the soft drink in the straw rises up as soon as air is blown over its open end. Which one of the following best explains the reason for rise in level of the drink?
The human lung is well adapted to breathe at a pressure of ______ k Pa.
