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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electrocardiogram (ECG)
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sphygmomanometer
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stethoscope
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pulse oximeter
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thermometer
B
Correct answer
Explanation
Blood pressure is measured by Sphygmomanometer.
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Thermometer
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Wattmeter
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Voltmeter
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Ammeter
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Multimeter
A
Correct answer
Explanation
A thermometer is used to measure the temperature.
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Speedometer
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Anemometer
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Ammeter
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Odometer
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Voltmeter
A
Correct answer
Explanation
A speedometer or a speed meter is a gauge that measures and displays the instantaneous speed of a vehicle.
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Weather vane
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Chronometer
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Sextant
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Magnetic compass
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None of these
D
Correct answer
Explanation
It is used by pilots and navigators to find the direction.
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Hertz
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Pascal
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Watt
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Decibel
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Ampere
B
Correct answer
Explanation
It is the unit of sound pressure.
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Magnifying glass
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Camera
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Telescope
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Microscope
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None of the above
D
Correct answer
Explanation
A microscope is an optical instrument used for viewing very small objects, such as plant and animal cells. It can be magnified to several hundred times. This is the right answer.
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Actinometer
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Anemometer
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Altimeter
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Barometer
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Audiometer
B
Correct answer
Explanation
It is correct. Anemometer is the instrument for measuring wind speed.
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a. Seismograph - Earthquakes
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b. Anemometer - Speed of the wind
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c. Hygrometer - Water vapour content of the atmosphere
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d. Lactometer - Specific gravity of liquids
D
Correct answer
Explanation
All three instruments A, B, and C are correctly matched - seismograph measures earthquakes, anemometer measures wind speed, hygrometer measures atmospheric water vapor. Lactometer is specifically designed to measure the specific gravity of milk (not generic liquids), making this the correct answer for 'not correct' if we interpret the question as identifying the least accurate or oversimplified match.
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Rectifier
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Amplifier
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Diode
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LED
B
Correct answer
Explanation
Amplifier is the device used for amplification.
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potometer
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microscope
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auxanometer
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calorimeter
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manometer
C
Correct answer
Explanation
It is an apparatus for measuring increase or rate of growth in plants.
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Measure the strength of an electric current
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Detect the presence of electric charge
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Measure sound under water
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None of these.
B
Correct answer
Explanation
An electroscope is a simple device used to detect and measure the presence of electric charge on a body. When a charged object is brought near, the electroscope's leaves diverge, indicating charge presence. It does not measure current strength or sound.
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Stethoscope
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Thermometer
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Nanometer
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Sphygmomanometer
A
Correct answer
Explanation
Stethoscope is an instrument which amplifies sound and is used for listening a person's heartbeat or breathing.
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magnify or view very small objects
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measure the refractive index of a substance
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to compare the luminous intensity of the sources of light
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none of these
C
Correct answer
Explanation
A photometer is an instrument that measures the intensity of light or compares luminous intensity between different light sources. It's used in physics and optics laboratories.
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Hydrometer
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Hygrometer
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Opisometer
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Barometer
B
Correct answer
Explanation
A hygrometer is the instrument specifically designed to measure humidity or water vapor content in the atmosphere. A hydrometer measures liquid density, an opisometer measures curved line distances, and a barometer measures atmospheric pressure.
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anemometer
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wind vane
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wind gauze
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hygrometer