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.

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Physics Measuring Instruments Questions

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

A________is used to measure temperature

  1. Thermometer

  2. Barometer

  3. Manometer

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A thermometer is a device that measures temperature or a temperature gradient. A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the digital sensor in an infrared thermometer) in which some change occurs with a change in temperature, and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in industry to monitor processes, in meteorology, in medicine, and in scientific research

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

Name the device for detecting and measuring small amount of thermal energy.

  1. Pyranometer

  2. Pyrometer

  3. Barrater

  4. Bolometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A bolometer is a device used for measuring the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance.

Multiple choice chemistry materials around us and different types of houses materials around us matter and its states different states of matter

Which of the following is the most precise for measuring the volume of a liquid?

  1. Test tube

  2. Graduated cylinder

  3. Burette

  4. Volumetric flask

  5. Beaker
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Volumetric flask is the most precise for measuring the volume of a liquid.


When the values of different measurements are close to each other as well as to average value, such measurements are called precise.

Hence the correct option is D.

Multiple choice social studies precautions for natural disasters cyclonic winds monsoon phenomena and its mechanism tsunami, floods, cyclones, droughts and landslides

The instrument that measures the wind speed in a cyclone is ________.

  1. Anemometer

  2. Barometer

  3. Thermometer

  4. Ammeter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An anemometer is commonly used to measure wind speed. Wind speed, or wind flow velocity, is a fundamental atmospheric quantity. Wind speed is caused by air moving from high pressure to low pressure, usually due to changes in temperature. Wind speed is now commonly measured with an anemometer but can also be classified using the older Beaufort scale which is based on people's observation of specifically defined wind effects.

Multiple choice physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

Which of the following is used to measure the volume of a regular shaped object?

  1. Metre scale

  2. Vernier callipers

  3. Screw guage

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find the volume of a regular shaped object ,first its dimensions are measured using either a metre scale, a vernier callipers or a screw gauge and then volume is calculated using corresponding relations.

Multiple choice physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

Which of the following is used to measure the volume of a liquid or an irregular shaped object?

  1. A burette

  2. A measuring flask

  3. A measuring cylinder

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Volume of a liquid or an irregular solid object is measured with the help of burettes, measuring flasks and measuring cylinders.

Multiple choice physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

Which of the following is not used to measure the volume of a liquid or an irregular shaped object?

  1. A pipette

  2. A measuring flask

  3. A graduated cylinder

  4. A meter scale
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A liquid or an irregular shaped object does not have a geometric shape. So, by measuring its certain dimensions, volume may not be calculated. Hence a meter scale can not be used to measure the volume of a liquid or an irregular shaped object.

Multiple choice physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

Which of the following instruments can be used to measure the volume of a liquid?

  1. Measuring cylinder

  2. Vernier callipers

  3. Pipette

  4. Measuring flask
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

Measuring cylinder, pipette and measuring flask are used to measure the volume of the given liquid whereas vernier calliper is used measure the length of the object.

Multiple choice physics electrical conductivity of liquids does liquid conduct electricity? liquids conduct electricity do liquids conduct electricity?

Which of the following would show deflection in the compass needle, the moment you dip the free ends of the tester?

  1. Tap water, vinegar

  2. Tap water, vegetable oil

  3. Tap water, honey

  4. Vegetable oil, honey
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tap water and vinegar are good conductors of electricity and hence, the compass needle could show deflection.

Multiple choice archimedes' principle fluid pressure properties of matter physics

Which of the following instrument is used to measure the volume of a solid by water displacement ?

  1. Thermometer

  2. Graduated cylinder

  3. Buret

  4. Salt bridge

  5. Conductivity tester
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Graduated cylinder  is used to measure the volume of a solid by water displacement. The volume of water displaced will be equal to the volume of the solid.

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

Human body temperature is well measured by 

  1. A clinical thermometer

  2. A laboratory thermometer

  3. Thermostat

  4. Both A & B can be used
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A clinical thermometer is a thermometer used to measure human body temperature. Most old ones use mercury thermometer. It is accurate and sensitive, because it has a narrow place where the mercury level rises very fast.

These thermometers are used in clinics by doctors, so they are also called a doctor's thermometers or medical thermometers. Most of them show both Celsius scale and Fahrenheit temperature scales. The scale runs from 35 degree Celsius to 42 degree Celsius.

Medical thermometers are cleaned before and after each use, with alcohol.

It has a kink which does not allow the mercury level to fall on its own.
Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

A clinical thermometer can not be used to measure

  1. Room temperature

  2. Human body temperature

  3. Temperature of a boiling water

  4. Temperature of a lake water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
clinical Thermometer (or doctor's thermometer) is used for measuring a person's temperature. 
The temperature range that is marked on a clinical thermometer is about $35^oC$ to $43^oC$ (or $ 95^oF$ to $109^oF). $
After a clinical thermometer has been used to record a patient's temperature, the mercury is prevented from contracting into the glass bulb by the constriction kink.
Hence cannot be used to measure temperature of boiling water which is about $100^oC$
Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

A laboratory thermometer can not be used to measure

  1. Temperature of ice

  2. Temperature of pond water

  3. Temperature of human body

  4. Temperature of boiling water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Laboratory thermometer are used to take measurements in laboratories mainly. They can't be used to measure body temperature of a human. It is because of two reasons.  :
$(1)$ Due to vast difference in the range of operating temperature.
$(2)$ Due to difference in time for which the indicated temperature is held at that level.
Hence, the answer is Temperature of human body.