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प्रश्न
What is a dew point temperature?
उत्तर
When unsaturated air (of specific volume) at a certain temperature is taken and its temperature is decreased, a temperature is reached at which the air becomes saturated with vapour. This temperature is called the dew point temperature.
APPEARS IN
संबंधित प्रश्न
The vapour content in the air is measured using a physical quantity called ____________.
Relative humidity greater than 60% : humid air : : relative humidity less than 60% : _______
What does the existence of drops of water on the leaves of a tree in the morning indicate?
Match the columns.
| Column A | Column B |
| 1) Dry air | a) 4 °C |
| 2) Humid air | b) Relative humidity 100% |
| 3) Saturated air/Dew point temperature | c) Relative humidity below 60% |
| 4) Maximum density of water | d) Relative humidity above 60% |
| e) – 4 °C |
Humidity relative to dew point temperature is 100%.
The unit of absolute humidity is kg/m3.
Drops of water can be seen accumulating on the glass of vehicles in the early hours of winter.
Write scientific reason.
During winter season, we may have observed a white trail at the back of the aeroplane flying high in the clear sky or sometimes it may not get formed.
Write a short note.
Dew point temperature
Geeta observed a white trail at the back of aeroplane in a clear sky to answer the question from this incident given below.
- What will be the effect of relative humidity of the air surrounding the plane?
- What will be the effect of relative humidity of the air surrounding the plane is low?
- When the air is dry and humid?
How much is the relative humidity at the dew point?
How do we feel about air in each of the following conditions?
- Relative humidity is more than 60%.
- Relative humidity is less than 60%.
