Question
Q IF Al DIPPED IN H2O AT 10*C THEN FORCE OF BUOYANCY WILL INCREASE OR DECREASE?
Q TEMP. OF A SOLID OBJECT IS OBSV. CONST .DURING A PERIOD . IN THIS PERIOD
a)HEAT MAY HAVE BEEN SUPPLIED TO IT
b) H MAY HAVE BEEN EXTRACTED FROM IT
c) no H SUPPLIED TO IT
d)NO H EXTRACTED FROM IT
more than one opt is correct . pls explain your each opt with expln.
Joshi sir comment
It depends that either Al or water will change its density more rapidly, because Bouyancy is based on densities of solid and liquid
Answer : a, because it may be an isothermal process
b, because in isothermal process, surrounding can also give heat to the system.
c, may be the process is adiabatic
d, may be adiabatic.