The relative humidity on a day, when partial pressure of water vapour is \( 0.012 \times 10^{5} ...

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The relative humidity on a day, when partial pressure of water vapour is \( 0.012 \times 10^{5} \mathrm{~Pa} \) at \( 12^{\circ} \mathrm{C} \) is (take vapour pressure of water at this temperature as \( 0.016 \times 10^{5} \mathrm{~Pa} \) )
[AIIMS 1998]
(a) \( 70 \% \)
(b) \( 40 \% \)
(c) \( 75 \% \)
(d) \( 25 \% \)
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