A hydrometer floats with half of its stem outside the surface of water. Now, if it is placed in alcohol of relative density (RD) = 0.8, then will more of the stem part be below or above the liquid surface? Give reason.
a) Above; RD of alcohol is less than 1, so it is less dense than water
b) Below; RD of alcohol is less than 1, so it is less dense than water
c) Above; RD of alcohol is more than 1, so it is more dense than water
d) Below; RD of alcohol is more than 1, so it is more dense than water
