5 A vertical wooden cylinder AB of uniform cross section and

Last updated: 6/3/2023

5 A vertical wooden cylinder AB of uniform cross section and closed at both ends and of length 1 10 m contains mercury occupying a column of length 10 cm at 0 C Initially the cylinder is vertical with end A below B Without raising the cylinder it is quickly inverted about its centre so that remaining vertical the end B is below A The procedure is repeated to bring A again below B This process is repeated quickly 100 times Assuming that the thermal energy during the process is absorbed by mercury and specific heat of mercury 140 J kg K and coefficient of cubical expansion of mercury is 1 8 x 104 K the increase in the temperature of mercury is Ignore the expansion of the wooden cylinder A 21 C B 14 C nerv C 15 4 C D 25 2 C