Question

Sarath is sitting in a room where the temperature is constantly ${50}^{\circ }C$.

Komal is sitting in a room where the temperature is constantly ${25}^{\circ }C$.

They both take a glass (same size) of water and put it on a table in their respective rooms.

Let’s say they check it after 5 days.

Whose glass will have higher water level?

• A. Sarath
• B. Komal
• C. Both glasses will have same water level.
• D. The water level in both the glasses remain unaltered

Answer 1

The correct option is B Komal

Just analyse the conditions here.

Sarath $\Rightarrow$ Temperature $\Rightarrow {50}^{\circ }C$

Komal $\Rightarrow Temperature\Rightarrow {25}^{\circ }C$

There is difference only in temperature.

Next question will be how the level of water will decrease?

The answer is $\Rightarrow$ because of evaporation.

Now, what is the effect of temperature on evaporation?

The rate of evaporation increases with an increase in temperature. At a higher temperature, the fraction of molecules having sufficient kinetic energy to escape from the surface increases.
Therefore, there will be more evaporation in the case of Sarath and there will be less water in the glass in his case.
So, Komal's glass will have higher water level.