Absolute humidity in the atmosphere at 10°C is 5.0 g/m³, and the maximum amount of water air can hold at the same temperature is 10 g/m³. What will be the relative humidity at the same temperature?

Correct option is C

The correct answer is (c) ~50%. Relative humidity (RH) is calculated using the formula:

Given:
· Absolute humidity = 5.0 g/m³
· Maximum humidity = 10 g/m³

This means the air is holding 50% of the moisture it can possibly hold at 10°C.
Information Booster: 1. Relative Humidity (RH): The ratio of the current absolute humidity to the maximum possible humidity at a given temperature, expressed as a percentage.
2. Absolute Humidity: The actual amount of water vapor in the air, measured in grams per cubic meter (g/m³).
3. Maximum Humidity: The highest amount of water vapor the air can hold at a given temperature (saturation point).
4. Saturation: When relative humidity reaches 100%, the air cannot hold any more water vapor, leading to condensation.
5. Temperature Dependence: Warmer air can hold more water vapor, thus affecting relative humidity.
6. Comfort Levels: Relative humidity between 30% and 50% is generally comfortable for humans.
Additional Knowledge: · (a) ~20%: This would be correct if the absolute humidity were significantly lower, e.g., 2 g/m³ out of 10 g/m³.
· (b) ~200%: Relative humidity cannot exceed 100% under normal conditions. A value of 200% is incorrect.
· (c) ~50%: Correct answer based on the provided values.
· (d) ~2%: This would be an extremely low humidity level, representing very dry air conditions, which do not match the given values.