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.

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Physics Measuring Instruments Questions

Multiple choice

Which of the following is a type of fog-collecting net used to capture water droplets in deserts?

  1. Windsock

  2. Barbed wire

  3. Fog fence

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

Fog fences are large nets used to capture water droplets from fog in deserts. They are typically made of plastic or nylon mesh and can collect significant amounts of water.

Multiple choice

Which of the following is an ancient mathematical instrument used for measuring angles?

  1. Astrolabe

  2. Compass

  3. Protractor

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

The astrolabe is an ancient instrument used to measure the altitude of celestial bodies, such as the sun and stars, above the horizon. It was used in astronomy, navigation, and surveying.

Multiple choice

Which mathematical instrument is used for drawing circles and arcs?

  1. Compass

  2. Protractor

  3. Ruler

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

A compass is a drawing instrument used for drawing circles and arcs. It consists of two legs, one with a sharp point and the other with a pencil or pen.

Multiple choice

Which mathematical instrument is used for measuring and displaying time?

  1. Clock

  2. Compass

  3. Protractor

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

A clock is a device used for measuring and displaying time.

Multiple choice

Which mathematical instrument is used for measuring and displaying physical quantities?

  1. Meter

  2. Micrometer

  3. Thermometer

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

A meter is a device used for measuring and displaying physical quantities, such as length, mass, and temperature.

Multiple choice

Which instrument is primarily used to measure ocean currents?

  1. Current meter

  2. Salinometer

  3. Thermistor

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

Current meters are specialized instruments designed to measure the speed and direction of ocean currents.

Multiple choice

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

  1. Echosounder

  2. Current meter

  3. Salinometer

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

Echosounders emit sound waves and measure the time it takes for the waves to bounce off the ocean floor and return, providing information about the depth.

Multiple choice

What is the purpose of a rosette sampler in oceanography?

  1. Measuring ocean currents

  2. Collecting water samples at various depths

  3. Measuring dissolved oxygen

  4. Measuring water clarity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rosette samplers are used to collect water samples at specific depths, allowing scientists to analyze water properties and constituents.

Multiple choice

Which instrument is commonly used to measure water clarity or turbidity in the ocean?

  1. Secchi disk

  2. Current meter

  3. Salinometer

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

Secchi disks are simple but effective tools used to measure water clarity by lowering them into the water and recording the depth at which they disappear from sight.

Multiple choice

Which instrument is used to measure the concentration of dissolved oxygen in seawater?

  1. Dissolved oxygen meter

  2. Current meter

  3. Salinometer

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

Dissolved oxygen meters measure the amount of dissolved oxygen in seawater, which is crucial for marine life and ecosystem health.

Multiple choice

Which instrument is commonly used to measure the speed and direction of ocean currents?

  1. Current meter

  2. Salinometer

  3. Thermistor

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

Current meters measure the speed and direction of ocean currents, providing valuable information for understanding ocean circulation patterns.

Multiple choice

Which instrument is commonly used to measure the temperature of seawater?

  1. Thermistor

  2. Current meter

  3. Salinometer

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

Thermistors are temperature sensors used to measure the temperature of seawater, providing insights into ocean thermal structure and variability.

Multiple choice

Which instrument is commonly used to measure the salinity of seawater?

  1. Salinometer

  2. Current meter

  3. Thermistor

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

Salinometers measure the salinity of seawater, which is a crucial parameter for understanding ocean circulation patterns and water mass characteristics.

Multiple choice

Which instrument is commonly used to measure the concentration of nutrients in seawater?

  1. Nutrient analyzer

  2. Current meter

  3. Salinometer

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

Nutrient analyzers measure the concentration of nutrients, such as nitrates and phosphates, in seawater, providing insights into marine productivity and ecosystem dynamics.

Multiple choice

Which of the following is NOT a common type of sensor used in aircraft avionics systems?

  1. Accelerometer

  2. Gyroscope

  3. Magnetometer

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

Barometer is not commonly used as a sensor in aircraft avionics systems.