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If actual vapour pressure is 12 and saturation vapour pressure is 24, what is relative humidity (RH)?

Answer and explanation

Correct answer: 50%

Relative humidity is calculated as RH = (actual vapour pressure ÷ saturation vapour pressure) × 100. Substituting the given values gives RH = (12 ÷ 24) × 100 = 0.5 × 100 = 50%. Thus option B is correct. The units cancel because both pressures are measured in the same unit.

Related tags

Relative HumidityVapour PressureNumerical FormulaHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereGeographyClass 12 Mcq

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