Name the instrument which is used to measure atmospheric pressure.
A
Manometer
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B
Thermometer
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C
Speedometer
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D
Barometer
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Solution
The correct option is D 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.