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

A galvanometer detects

  1. resistance

  2. energy

  3. current

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

A galvanometer is an electromechanical instrument used for detecting and indicating an electric current.

Multiple choice

What is the anemomter used to measure?

  1. Rainfall

  2. Speed of wind

  3. Air pressure

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

An anemometer is a scientific instrument used to measure the speed and direction of the wind. It is a standard tool in meteorology for weather forecasting. Air pressure is measured by a barometer, while rainfall is measured by a rain gauge.

Multiple choice

Atmospheric pressure is measured by

  1. hydrometer

  2. barometer

  3. altimeter

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

A barometer is a scientific instrument used in meteorology to measure atmospheric pressure.

Multiple choice

Which of the following statements is/are false?

a. Maximum and minimum temperatures of the previous day, reported in weather reports are measured by a thermometer called bimetallic thermometer. b. A thermometer that is used by doctors to measure temperature of his patients is known as clinical thermometer. c. The thermometer that consists of a very fine glass tube having a very small bore called a capillary tube.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

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

This is the correct option as this statement is false. Maximum and minimum temperatures of the previous day, reported in weather reports, are measured by a thermometer called maximum and minimum thermometer.

Multiple choice

Which instrument is used to measure the depth of the sea?

  1. Electrometer

  2. EEG

  3. Endoscope

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

A Fathometer is a type of sonar instrument used to measure the depth of water or the depth of the sea floor. It works by sending sound pulses and measuring the time taken for the echo to return.

Multiple choice

Soil salinity is measured by

  1. porometer

  2. potometer

  3. conductivity meter

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

Soil salinity is typically measured by determining the electrical conductivity of a soil extract, as dissolved salts increase the conductivity of the solution.

Multiple choice

Root pressure in a plant is measured by

  1. potometer

  2. manometer

  3. thermometer

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

A manometer is a device used to measure pressure, including the root pressure exerted by plants. A potometer measures transpiration rates, while a barometer measures atmospheric pressure.

Multiple choice

The instrument used to measure the growth of plants is

  1. seismograph

  2. crescograph

  3. altimeter

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

The crescograph is a device invented by Jagadish Chandra Bose to measure the growth rate of plants. A seismograph measures earthquakes, an altimeter measures altitude, and a hygrometer measures humidity.