If a room with the air of volume 30 $m^{3}$ at $50 ° C$ can hold at max 900 grams of water vapour and if the actual amount of water vapour it holds is 450 grams of water, which of the following option would be true?

Relative Humidity would be = 50%

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Actual Humidity would be = 30

\frac{g}{m^{3}}

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Actual Humidity would be = 15

\frac{g}{m^{3}}

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Relative Humidity would be = 150%

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Solution

The correct option is C Actual Humidity would be = 15 $\frac{g}{m^{3}}$
T = Temperature.
P = Pressure.

Relative humidity = $\frac{A c t u a l a m o u n t o f w a t e r v a p o u r p r e s e n t a t a g i v e n T a n d P}{M a x i m u m a m o u n t o f w a t e r v a p o u r p r e s e n t a t a g i v e n T a n d P}$

Relative Humidity = $\frac{450}{900} \times 100 % = 50 %$

Actual Humidity = $\frac{450 g}{30 m^{3}}$ = 15 $\frac{g}{m^{3}}$

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