Physics ยท 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

What instrument is used to measure the height of clouds?

  1. Ceilometer

  2. Lidar

  3. Radar

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

A ceilometer, lidar, and radar are all used to measure the height of clouds.

Multiple choice

What instrument is used to measure the type of clouds?

  1. Nephelometer

  2. Ceilometer

  3. Lidar

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A nephelometer is used to measure the type of clouds.

Multiple choice

What instrument is used to measure the amount of aerosols in the atmosphere?

  1. Nephelometer

  2. Ceilometer

  3. Lidar

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A nephelometer is used to measure the amount of aerosols in the atmosphere.

Multiple choice

What instrument is used to measure the amount of ozone in the atmosphere?

  1. Ozone monitor

  2. Dobson spectrophotometer

  3. Lidar

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

An ozone monitor, Dobson spectrophotometer, and lidar are all used to measure the amount of ozone in the atmosphere.

Multiple choice

What instrument is used to measure the amount of carbon dioxide in the atmosphere?

  1. Carbon dioxide monitor

  2. Gas chromatograph

  3. Lidar

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

A carbon dioxide monitor, gas chromatograph, and lidar are all used to measure the amount of carbon dioxide in the atmosphere.

Multiple choice

What instrument is used to measure the amount of methane in the atmosphere?

  1. Methane monitor

  2. Gas chromatograph

  3. Lidar

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

A methane monitor, gas chromatograph, and lidar are all used to measure the amount of methane in the atmosphere.

Multiple choice

Which instrument is commonly used to measure the refractive index of liquids?

  1. Refractometer

  2. Spectrophotometer

  3. Polarimeter

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

A refractometer is a device specifically designed to measure the refractive index of liquids. It works by measuring the critical angle of a liquid sample and using this information to calculate the refractive index.

Multiple choice

What is the Imhoff cone used for in settleable solids measurement?

  1. Measuring the volume of settled solids

  2. Collecting water samples for analysis

  3. Mixing water samples with chemicals

  4. Calibrating laboratory equipment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Imhoff cone is a graduated container used to measure the volume of settled solids after a specific settling time.

Multiple choice

What is the most important piece of scuba diving equipment?

  1. Buoyancy compensator device (BCD)

  2. Scuba tank

  3. Regulator

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

The most important piece of scuba diving equipment is the buoyancy compensator device (BCD), which helps to control the diver's buoyancy.

Multiple choice

Which flow visualization method utilizes a heated wire to measure flow velocity?

  1. Hot-Wire Anemometry

  2. Laser Doppler Velocimetry (LDV)

  3. Particle Image Velocimetry (PIV)

  4. Flow Visualization by Luminescent Paint
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hot-Wire Anemometry involves placing a heated wire in the flow and measuring the heat transfer from the wire to the fluid to determine flow velocity.

Multiple choice

What is the primary instrument used to measure gravity?

  1. Gravimeter

  2. Seismometer

  3. Magnetometer

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

A gravimeter is the primary instrument used to measure gravity, detecting variations in the Earth's gravitational field.

Multiple choice

What is the name of the instrument used to measure wind speed?

  1. Anemometer

  2. Barometer

  3. Thermometer

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

An anemometer is a device used to measure wind speed. It typically consists of rotating cups or vanes that are moved by the wind, and the speed of rotation is converted into a wind speed measurement.

Multiple choice

What is the name of the instrument used to measure air pressure?

  1. Barometer

  2. Anemometer

  3. Thermometer

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

A barometer is a device used to measure air pressure. It typically consists of a column of liquid, such as mercury or water, and the height of the liquid column is influenced by the air pressure.

Multiple choice

The Beaufort Wind Scale is used to measure:

  1. Wind speed

  2. Wind direction

  3. Air temperature

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

The Beaufort Wind Scale is used to measure wind speed based on observed sea conditions and land-based effects.

Multiple choice

Which instrument is commonly used for measuring the vertical distribution of temperature and humidity in the atmosphere?

  1. Radiosonde

  2. Lidar

  3. Radar

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

Radiosonde is a balloon-borne instrument package that measures atmospheric temperature, humidity, pressure, and wind speed as it ascends through the atmosphere.