A thin balloon filled with air at \( 47^{\circ} \mathrm{C} \) has a...

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A thin balloon filled with air at \( 47^{\circ} \mathrm{C} \) has a volume
\( \mathrm{P} \) of 3 litre. If on placing it in a cooled room its

W volume becomes 2.7 litre, the temperature of room is:
(1) \( 42^{\circ} \mathrm{C} \)
(2) \( 100^{\circ} \mathrm{C} \)
(3) \( 15^{\circ} \mathrm{C} \)
(4) \( 200^{\circ} \mathrm{C} \)
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