Which instrument is used to measure relative humidity?

Correct option is C

Correct Answer: (C) Hygrometer

• A hygrometer is the instrument used to measure relative humidity.

• Relative humidity refers to the amount of moisture in the air compared to the maximum amount of moisture the air can hold at a given temperature.

• Hygrometers work by either measuring the change in the physical properties of a substance (such as hair or a synthetic material) or using an electronic sensor to detect moisture in the air.

• There are different types of hygrometers, including psychrometers, digital hygrometers, and mechanical hygrometers.

• Relative humidity is expressed as a percentage, indicating how much moisture is in the air compared to the maximum amount the air can hold.

• Hygrometers can be based on different principles, such as absorption, evaporation, or electronic sensors.

• The psychrometer is a type of hygrometer that uses two thermometers (wet and dry) to calculate humidity.

• In modern technology, digital hygrometers are commonly used for quick and accurate measurements.

• Relative humidity is an important factor in weather forecasting, climate studies, and industrial processes.

• The ideal range for human comfort is typically between 30% to 50% relative humidity.

• Thermometer: Measures temperature, not humidity.

• Barometer: Measures atmospheric pressure, not humidity.

• Anemometer: Measures wind speed, not humidity.