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

Multiple choice business organisation and correspondence meaning and factors of business environment dimensions of business environment business environment and its dimensions business environment

Which of the following is an environmental scanning tool?

  1. PENTLE

  2. PINTLE

  3. PESTLE

  4. PANTLE
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

PESTLE analysis is a useful tool for understanding the big picture of the environment in which an entrepreneur is planning to operate.PESTLE stands for Political, Economic, Sociological, Technological, Legal, and Environmental.

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

 Thermometer that can measure rapidly changing temperature is:

  1. Mercury-in-glass thermometer

  2. Alcohol-in-glass thermometer

  3. Platinum resistance thermometer

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

Thermometer that can measure rapidly changing temperature is thermocouple thermometer.
Advantages of a thermocouple thermometer:
(a) Easy to read by using a pointer or a digital display.
(b) Wide range of temperature $- 200^oC to 1600^oC$
(c) It has has a small thermal capacity and is used to measure rapidly changing temperatures.

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

Which of the following measures pressure?

  1. Barometer

  2. Thermometer

  3. Pycnometer

  4. Parameter

  5. Pressometer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems and frontal boundaries.

Multiple choice

What is a characteristic of a digital sensor?

  1. A single, variable output

  2. Does not use electricity

  3. Outputs a stream of 1s and 0s

  4. Can only measure temperature
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Digital sensors convert physical quantities into discrete signals, specifically a stream of binary data (1s and 0s) that a computer can process.

Multiple choice botany cell and cellular organization cell theory microscope cell and its discovery

The instrument used to observe cells is

  1. Stethoscope

  2. Microscope

  3. Manometer

  4. Endocardiogram
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • A microscope is an instrument, which is used for observing very small objects. 
  • It uses lens or combination of lenses to produce a magnified image of tiny objects, which are not visible to the naked eyes. 
  • Cells are also very small, which cannot be seen by the naked eyes. Hence, a microscope is used to observe cells. So option B is correct.
Multiple choice

What instrument is used to determine relative humidity and dew point?

  1. psychrometer

  2. barometer

  3. anemometer

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

A psychrometer is a type of hygrometer that consists of two thermometers: a dry-bulb and a wet-bulb. By measuring the temperature difference between them as water evaporates from the wet bulb, meteorologists can determine relative humidity and dew point. Other instruments like barometers measure pressure, and anemometers measure wind speed.

Multiple choice

In 1816 which instrument discovered by Rene Laennec ?

  1. Sphygmomanometer

  2. Stethoscope

  3. Barometer

  4. Thermometer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

René Laennec invented the stethoscope in 1816 at the Necker-Enfants Malades Hospital in Paris. It was originally a wooden tube used to listen to heart and lung sounds, which greatly improved diagnostic accuracy.

Multiple choice

A thermometer is a device used to measure what?

  1. Pressure

  2. Temperature

  3. Small distances

  4. Long distances
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A thermometer is a scientific instrument designed to measure temperature, which is the degree of hotness or coldness of an object or environment. The word comes from the Greek therme (heat) and metron (measure).

Multiple choice

Which apparatus is used to measure transpiration rate?

  1. Potometer

  2. Spirometer

  3. Respirometer

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

A potometer is a laboratory apparatus used to measure the rate of water uptake by a leafy shoot, which is directly proportional to the rate of transpiration. Other devices like spirometers and respirometers measure gas exchange in respiration, while a pooter is used to collect small insects.

Multiple choice

Transpiration is measured by

  1. Osmometer

  2. Manometer

  3. Potometer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A potometer is a laboratory device used to measure the rate of water uptake (transpiration) by a leafy shoot.

Multiple choice

Osmosis is measured by

  1. Osmometer

  2. Mannometer

  3. Potometer

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

An osmometer is a device used to measure the osmotic pressure of a solution.

Multiple choice

How do we describe the exact volume of matter?

  1. We us a thermometer.

  2. We use a graduated cylinder.

  3. We use a triple beam balance.

  4. We use a beaker.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A graduated cylinder is the standard laboratory tool used to measure the volume of liquids accurately.