A glass bulb is connected to an open limb manometer. The level of mercury in both limbs of the manometer was same. The bulb was heated to 57^(@)C. If the room temperature and the atmospheric pressure were 27^(@)C and 750 mm, the difference of levels in the two limbs now will be

A glass bulb is connected to an open limb manometer. The level of merc

1.	A glass bulb is connected to an open limb manometer. The level of mercury in both limbs of the manometer was same. The bulb was heated to 57^(@)C. If the room temperature and the atmospheric pressure were 27^(@)C and 750 mm, the difference of levels in the two limbs now will be
Answer» 2.5 CM 5.0 cm 7.5 cm 10.0 cm Solution :When volume is constant, `(P_(1))/(T_(1)) = (P_(2))/(T_(2))` `:. (750)/(300) = (P_(2))/(330) " or " P_(2) = 825 mm` `:.` Difference of levels `= 825 - 750 = 75 mm` `= 7.5 cm`