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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.
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संबंधित प्रश्न
What do you mean by atmospheric pressure?
How does the atmospheric pressure change with altitude?
State two advantages of an aneroid barometer over a simple barometer.
The unit torr is related to the barometric height as :
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.
State two factors which affect the atmospheric pressure as we go up.
Humans are sensitive even to a small variations in pressure.
What does low pressure and high pressure lead to?
What is referred to as atmospheric pressure?
