Physics · General Awareness
Physics Measuring Instruments
1,123 Questions
Physics measuring instruments are essential tools used to measure various physical quantities. This topic covers devices like hygrometers, oscilloscopes, and sphygmomanometers. It is a highly scoring section in general science and general awareness examinations.
Pressure and humidity instrumentsElectrical measuring devicesMedical physics toolsNavigational instruments
Physics Measuring Instruments Questions
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Only a
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Only a and b
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Only b
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Only b and c
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Only c
C
Correct answer
Explanation
This is the correct option as this statement is false.
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Galvanometer
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Ammeter
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Voltmeter
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Millimeters
C
Correct answer
Explanation
A voltmeter is designed to measure potential difference across a component and must be connected in parallel. To ensure it does not draw significant current from the circuit, it is built with a very high internal resistance.
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Mercury
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Alcohol
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distilled water
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does not used any liquid
D
Correct answer
Explanation
An aneroid barometer measures atmospheric pressure using a flexible metal box (aneroid cell) that expands or contracts with pressure changes, rather than using a liquid like mercury.
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humidity
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intensity of earthquakes
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the velocity of the wind
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air pressure
C
Correct answer
Explanation
The Beaufort scale is an empirical measure that relates wind speed to observed conditions at sea or on land. It ranges from 0 (calm) to 12 (hurricane force).
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potometer
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crescograph
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pyrometer
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manometer
A
Correct answer
Explanation
Potometer is used to measure the rate of water uptake by plants for photosynthesis and transpiration.
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ammeter
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galvanometer
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voltmeter
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potentiometer
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Phonograph
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Photometer
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Pyrometer
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Sextant
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None
C
Correct answer
Explanation
A pyrometer is a type of remote-sensing thermometer used to measure the temperature of surfaces from a distance.
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Lactometer
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Fathometer
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Gyroscope
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Pyrometer
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None
A
Correct answer
Explanation
A lactometer is a hydrometer used to check the purity of milk by measuring its specific gravity.
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Barometer
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Hygrometer
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Thermometer
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Anemometer
D
Correct answer
Explanation
An anemometer is the standard instrument used to measure wind speed.
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Altimeter
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Hydrometer
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Barometer
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Thermometer
C
Correct answer
Explanation
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure.
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Anemometer
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Spirometer
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Photometer
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Tachymeter
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Mercury
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Argon
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Neon
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Helium
A
Correct answer
Explanation
A long glass tube filled with mercury and turned upside down into a container of mercury is called a barometer and it is used for measuring atmospheric pressure.
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Barometer
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Rain gauge
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Hygrometer
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Anemometer
B
Correct answer
Explanation
Rain gauge is used to measure the amount of rainfall.
Anemometer is used to measure wind speed.
Hygrometer is used to measure humidity.
Barometer is used to measure atmospheric pressure.
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electrometer
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electrolyter
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voltameter
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ammeter
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potometer
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porometer
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auxanometer
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respirometer
A
Correct answer
Explanation
A potometer is a device used for measuring the rate of water uptake of a leafy plant shoot. The main reason for water uptake by a cut shoot is transpiration (evaporation in plants). It is affected by the transpiration stream.