A jar contains a gas and a few drops of water at 'T' K . The pressure in the jar is 830mm of Hg. The temperature of the jar is reduced by $1\%$. The vapour pressure of water at two temperature are 30 and 25 mm of Hg. Calculate the new pressure in the jar.

Question

$(a)\;817mm\;of\;Hg\qquad(b)\;8.17mm\;of\;Hg\qquad(c)\;817cm\;of\;Hg\qquad(d)\;8.17 \;litre$