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

Which of the following is a common method for measuring the thickness of optical coatings?

  1. Ellipsometer

  2. Refractometer

  3. Polarimeter

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

An ellipsometer is a device used to measure the thickness of optical coatings by analyzing the change in polarization state of light reflected from the coating.

Multiple choice

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

  1. Anemometer

  2. Barometer

  3. Thermometer

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

An anemometer is a device used to measure wind speed, typically consisting of rotating cups or vanes that are moved by the wind.

Multiple choice

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

  1. Barometer

  2. Thermometer

  3. Anemometer

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

A barometer is a device used to measure atmospheric pressure, typically consisting of a sealed glass tube containing mercury or another liquid.

Multiple choice

What is the name of the instrument used to measure temperature?

  1. Thermometer

  2. Barometer

  3. Anemometer

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

A thermometer is a device used to measure temperature, typically consisting of a glass tube containing a liquid, such as mercury or alcohol, that expands or contracts with changes in temperature.

Multiple choice

What are some of the instruments that are used to study the CMB?

  1. Telescopes

  2. Radio telescopes

  3. Satellites

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

Telescopes, radio telescopes, and satellites are all used to study the CMB.

Multiple choice

What are the two main types of gravimetric analysis?

  1. Precipitation gravimetry and volatilization gravimetry

  2. Precipitation gravimetry and combustion gravimetry

  3. Precipitation gravimetry and electrodeposition gravimetry

  4. Precipitation gravimetry and complexation gravimetry
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The two main types of gravimetric analysis are precipitation gravimetry and volatilization gravimetry.

Multiple choice

Which optical instrument is used to measure the angle of incidence of light?

  1. Telescope

  2. Microscope

  3. Spectroscope

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

A goniometer is an optical instrument used to measure the angle of incidence of light on a surface.

Multiple choice

Which optical instrument is used to measure the refractive index of a material?

  1. Telescope

  2. Microscope

  3. Refractometer

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

A refractometer is an optical instrument used to measure the refractive index of a material.

Multiple choice

Which instrument is commonly used to measure the flow rate of a liquid in a pipe?

  1. Pressure gauge

  2. Rotameter

  3. Thermometer

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

Rotameters are commonly used to measure the flow rate of a liquid in a pipe by utilizing the principle of variable area flow measurement, where the float position indicates the flow rate.

Multiple choice

Which type of instrument is commonly used to measure the temperature of a process stream?

  1. Pressure gauge

  2. Rotameter

  3. Thermometer

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

Thermometers are commonly used to measure the temperature of a process stream by utilizing various principles such as liquid expansion, electrical resistance, or infrared radiation.

Multiple choice

Which golf accessory is used to measure the distance to the hole?

  1. Rangefinder

  2. GPS watch

  3. Yardage book

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

A rangefinder is a golf accessory used to measure the distance to the hole. It emits a laser beam that bounces off the target and returns to the device, providing an accurate measurement of the distance.

Multiple choice

What is the name of the instrument used to measure the Earth's magnetic field?

  1. Seismometer

  2. Magnetometer

  3. Gravimeter

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

A magnetometer is an instrument used to measure the Earth's magnetic field.

Multiple choice

What is the name of the instrument used to measure the Earth's gravitational field?

  1. Seismometer

  2. Magnetometer

  3. Gravimeter

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

A gravimeter is an instrument used to measure the Earth's gravitational field.

Multiple choice

What is a photometer?

  1. A device used to measure the intensity of light

  2. A device used to measure the distance to celestial objects

  3. A device used to study the composition of celestial objects

  4. A device used to study the structure of celestial objects
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A photometer is a device used to measure the intensity of light, which allows astronomers to study the brightness and temperature of celestial objects.

Multiple choice

Which ancient Chinese invention is used to measure the direction of the wind?

  1. The compass

  2. The astrolabe

  3. The sundial

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

The anemometer is an ancient Chinese invention used to measure the direction of the wind. It consists of a rotating vane that is attached to a pointer.