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प्रश्न
Explain why holes are made in hanging banners and hoardings.
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उत्तर १
Air exerts pressure. Wind blowing in high speed may break or displace many things. If holes are made in hanging banners and hoardings, then air can pass through these holes, which reduces the air pressure exerted on the banners and hoardings. That is why holes are made in hanging banners and hoardings
उत्तर २
Air exerts pressure. Due to this pressure banners and hoarding flutter and torn when wind is blowing fast. Holes are made in banners and hoardings so that wind passes through the holes and they do not become loose and fall down.
संबंधित प्रश्न
Fill the missing word in the blank spaces in the following statements:
Air moves from a region of __________ pressure to a region of ________ pressure.
What do you mean by atmospheric pressure?
We do not feel uneasy even under the enormous atmospheric pressure. Give a reason.
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Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
State two uses of a barometer.
Explain briefly the factors that affect Atmospheric Pressure.
High pressure is called ______.
Define Low pressure.
Give Reason for the following
Our ears pop in Airplanes.
