Consider the following statements: For the formation of dew, the dew point should be below the freezing point. For the formation of the frost, dew point should be at or above the freezing point. Which of the statements given above is/are correct?

1 only
2 only
Both 1 and 2
Neither 1 nor 2

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 4 : Neither 1 nor 2

The correct answer is Option 4.

When the moisture is deposited in the form of water droplets on cooler surfaces of solid objects, it is known as dew. The ideal conditions for its formation are the clear sky, calm air, high relative humidity, and cold and long nights.
For the formation of dew, it is necessary that the dew point is above the freezing point. Hence, statement 1 is incorrect.
Frost forms on cold surfaces when condensation takes place below freezing point (00C), i.e. the dew point is at or below the freezing point.
The excess moisture is deposited in the form of minute ice crystals instead of water droplets. Hence, statement 2 is incorrect.

4 views Answered 2022-09-04 04:29

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