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प्रश्न
What is an altimeter? State its principle. How is its scale calibrated?
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उत्तर
An altimeter is a device used in aircraft to measure its altitude.
Principle: Atmospheric pressure decreases with the increase in height above the sea level; therefore, a barometer measuring the atmospheric pressure can be used to determine the altitude of a place above the sea level.
The scale of altimeter is graduated with height increasing towards left because the atmospheric pressure decreases with increase of height above the sea level.
संबंधित प्रश्न
Describe a simple experiment to illustrate that air exerts pressure.
What is the purpose of a barometer? State two major defects of a simple barometer.
Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.
If there is low pressure at the equator, what will be the condition of air pressure in the Arctic Zone?
On the earth, air pressure is ______
What is meant by atmospheric pressure?
What is meant by atmospheric pressure?
The standard air pressure at sea level is ______.
______ is used to show the distribution of air pressure.
Tyre pressure of 30psi is almost ______ the atmospheric pressure.
