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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Richter scale
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Polygraph
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Seismograph
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None of these
C
Correct answer
Explanation
A seismograph is an instrument used to detect and record seismic waves caused by earthquakes. The Richter scale is a scale used to measure the magnitude, not the instrument itself.
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Graduated Cylinder
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Magnifying Glass
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Triple Beam Balance
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Graduated Balance
A
Correct answer
Explanation
A graduated cylinder is specifically designed with markings to measure the volume of liquids with high precision compared to beakers.
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Dropper
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Beaker
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Graduated Cylinder
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Test Tube
A
Correct answer
Explanation
A dropper (or pipette) is specifically designed to transfer small, precise amounts of liquid. Beakers and cylinders are for larger volumes.
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Beaker
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Graduated Cylinder
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Test Tube
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Measuring Cup
A
Correct answer
Explanation
A beaker is a cylindrical container with a flat bottom, used in laboratories to hold, mix, and heat liquids. It is not intended for precise volume measurements.
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Ampherage
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Joules
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Meters
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Liters
A
Correct answer
Explanation
The ampere measures electric current flow. Joules measure energy, meters measure distance, and liters measure volume.
A
Correct answer
Explanation
A pH meter provides a digital, precise measurement of the hydrogen ion concentration, whereas color-based indicators provide only an estimate based on color changes.
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pH scale
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hygrometer
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hydrometer
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barometer
A
Correct answer
Explanation
The pH scale is the standard logarithmic scale used to specify the acidity or basicity of an aqueous solution.
A
Correct answer
Explanation
The pH scale was developed by Søren Sørensen to provide a simple numerical way to express the concentration of hydrogen ions.
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anemometer
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aneroid barometer
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mercurial barometer
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barometer
A
Correct answer
Explanation
An anemometer is used to measure wind speed, not air pressure. Barometers are the instruments used to measure air pressure.
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mercurial barometer
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anemometer
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thermometer
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sling psychrometer
B
Correct answer
Explanation
An anemometer is the standard instrument used to measure wind speed.
D
Correct answer
Explanation
The Air Quality Index (AQI) is the standard tool used by government agencies to communicate how polluted the air currently is or how polluted it is forecast to become. EPA is an agency, not a measurement tool.
D
Correct answer
Explanation
Voltage (measured in Volts) is the potential difference or the pressure that pushes electric charge through a conductor.
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seismogram
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seismograph
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seismologist
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seismic wave
B
Correct answer
Explanation
A seismograph is an instrument used to detect and record seismic waves caused by earthquakes. A seismogram is the actual record produced by the machine.
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Distance and Velocity
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Velocity and Time
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Momentum and Time
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Time and Distance
D
Correct answer
Explanation
To calculate speed, you must know the total distance traveled and the total time taken to travel that distance.
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Pascalometer
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Aerometer
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Barometer
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Anemometer
C
Correct answer
Explanation
A barometer is the standard scientific instrument used to measure atmospheric pressure.