A barometer may be modified and used in an aircraft to measure a quantity other than atmospheric pressure. What is the name and use of this modified instrument?
A
Ammeter to measure altitude.
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B
Altimeter to measure cabin pressure.
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C
Altimeter to measure altitude.
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D
Newton- meter to measure weight.
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Solution
The correct option is C Altimeter to measure altitude. Altimeter is the name of this barometer and it is used to measure altitude.