The temperature and the dew point in an open room are $20^{0}$ C and $10^{0}$ C. If the room temperature drops to $15^{0}$ C, what will be the new dew point ?

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Solution

Temperature = $20^{0}$ C, dew point = $10^{0}$ C

The place is saturated at $10^{0}$ C even if the temperature drop dew point remains unaffected

The air has the vapour pressure which is the saturation VP at $10^{0}$ C if saturated vapour pressure does not change on temperature.

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The temperature and the dew point in an open room are 20°C and 10°C. If the room temperature drops at 15°C, what will be the new dew point?

BOOK ANSWER : 10°C

MY SUGGESTION :

My answer is also same as book because I think that dew point do not depend on environment temperature.

But I want to know that the reason I have mentioned is true or not, if my reason is wrong then why?

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