Question

Why do clothes dry faster on a windy day?
A.Evaporation increases with increase in wind speed
B.Evaporation increase with increase in humidity
C.Evaporation decreases with increase in wind speed
D.The above statement is incorrect

Answer 1

Hint: We know that clothes dry faster on a windy day. When we see the options, all the options are related to evaporation and the factors which govern its rate. So we will consider these factors and the effect on evaporation.

Complete step by step solution:
Evaporation is a process by which a substance in liquid state gets converted to its corresponding vapor state. It is different from boiling.
The statement given in the question is correct so we can eliminate the fourth option. So the fourth option is incorrect.
Now we will check the other three options.
Rate of evaporation is dependent on many factors.
We know that while clothes get dry the water in the clothes get converted to its vapor state by the process of evaporation.
So when the rate of evaporation will be more the clothes will dry faster.
In the first option we are given about dependence on wind speed. When the wind speed increases then the rate of evaporation also increases so the clothes will dry faster. So the same thing is given in the first. So the first option is correct. We will also check the other options.
In the second option we see dependence on humidity. Rate of evaporation is inversely proportional to humidity. So the rate of evaporation will decrease when humidity increases. So the second option is incorrect.
As the first option resembles the correct relationship between wind speed and rate of evaporation the third option becomes incorrect.

So, the correct option is A.

Note: For solving this question we need to know the various factors to which governs the rate of evaporation. We also used the same method to solve the question. Also as the statement is incorrect so we eliminated the fourth option in the beginning.