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

Directions: Select the correct alternative from the given choices.

An instrument to measure the humidity of air is termed as

  1. hygrometer

  2. seismograph

  3. hydrograph

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

A hygrometer is specifically designed to measure humidity or moisture content in the atmosphere. A seismograph measures earthquakes, a hydrograph tracks water levels, and a barometer measures atmospheric pressure. The prefix 'hygro-' relates to moisture.

Multiple choice

____ is used to measure relative humidity.

  1. Skopograph

  2. Anemometer

  3. Psychrometer

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

A Psychrometer is the instrument used to measure relative humidity. It consists of two thermometers - a dry bulb and a wet bulb - and uses the temperature difference between them to calculate humidity levels in the atmosphere.

Multiple choice

___ is used to measure wind speed.

  1. Wind vane

  2. Anemometer

  3. Airspeed indicator

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An Anemometer is the instrument specifically designed to measure wind speed. It typically consists of cups or propellers that rotate with the wind, converting the rotational speed into a wind speed measurement.

Multiple choice

____ is used to measure visibility.

  1. Transmisometer

  2. Ceilometer

  3. Psychrometer

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A Transmissometer is used to measure visibility, particularly in aviation contexts. It works by measuring how much light is transmitted through the atmosphere, providing accurate visibility readings especially during low visibility conditions.

Multiple choice

Radiosonde is used to measure upper air

  1. temperature

  2. pressure

  3. humidity

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A radiosonde is a battery-powered instrument package carried into the atmosphere by a weather balloon. It measures various atmospheric parameters including temperature, pressure, and humidity as it ascends through the troposphere and stratosphere. All three parameters (temperature, pressure, humidity) are measured by the standard radiosonde equipment.

Multiple choice

What is the purpose of maximum and minimum thermometers?

  1. To record rainfall

  2. To record wind speed

  3. To record temperature

  4. To record humidity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thermometer is a device used to measure the temperature of a body. To measure the atmospheric temperature, maximum and minimum thermometers are used.

Multiple choice

Which instrument is used to measure rainfall?

  1. Thermometer

  2. Rain gauge

  3. Nanometer

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

Rainfall is measured by an instrument called rain gauge. This is basically a measuring cylinder with a funnel on top to collect rainwater.

Multiple choice

What is the basic function a clinical thermometer?

  1. To record climatic temperature

  2. To measure temperature of body

  3. To measure rainfall

  4. To record conduction rate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The basic function of a clinical thermometer is to measure the temperature of body.

Multiple choice

Which thermometer is used to measure temperature of hot water?

  1. Clinical thermometer

  2. Laboratory thermometer

  3. Digital thermometer

  4. Maximum-minimum thermometer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Laboratory thermometer is used to measure temperature of hot water. Commonly available laboratory thermometer are:

(i) Mercury thermometer            (ii) Bimetallic strip thermometers.