EAMCET Engineering 2003 Solved Paper

'A horizontal uniform glass tube of 100‌cm, length sealed at both ends contains 10‌cm mercury column in the middle. The temperature and pressure of air on either side of mercury column are respectively 31∘C and 76‌cm of mercury. If the air column at one end is kept at 0∘C and the other end at 273∘C, then the pressure of air which is at 0∘C is : ( in cm of Hg )