Name the instrument which is used to measure atmospheric pressure.
A
Barometer
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B
Thermometer
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C
Manometer
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D
Speedometer
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Solution
The correct option is A Barometer A barometer is used to measure atmospheric pressure. The liquid used in barometer is mercury whose height varies with a change in atmospheric pressure. Thermometer is a device that measures temperature. Manometer is used for measuring liquid pressure. Speedometer is an instrument used for measuring the speed of a vehicle.