If actual vapour pressure is (15) and saturation vapour pressure is (30) what is the relative humidity?
Answer and explanation
Correct answer: 50%
Relative humidity is calculated as \(\frac{\text{actual vapour pressure}}{\text{saturation vapour pressure}}\times100\). Therefore, \(\frac{15}{30}\times100=50\%\). Hence, 50% is correct. It would be 60% only if the actual vapour pressure were 0.6 times the saturation vapour pressure. Exam tip: divide actual vapour pressure by saturation vapour pressure before multiplying by 100.
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What is the correct answer to this question?
50%
Why is this the correct answer?
Relative humidity is calculated as \(\frac{\text{actual vapour pressure}}{\text{saturation vapour pressure}}\times100\). Therefore, \(\frac{15}{30}\times100=50\%\). Hence, 50% is correct. It would be 60% only if the actual vapour pressure were 0.6 times the saturation vapour pressure. Exam tip: divide actual vapour pressure by saturation vapour pressure before multiplying by 100.
Which subject and chapter does this question cover?
This is a Class 9 Civics question. Chapter: Electoral Politics. Topic: Nomination of candidates and election campaigns.
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