A block of wood is floating in water at `0^@ C`. The temperature of water is slowly raised from `0^@ C` to `10^@ C`. How will the precentage of volume of block above water level change with rise in temperature?

Explanation

When temperature of water is raised from `0^(@)C` to `4^(@)C`, its density increases. Due to it, there will be more upward thrust on block of wood floating in water. As a result of it, the volume V will increases till temperature of water changes from `4^(@)C` to `10^(@)C` , the denisity of water decreases. Now there will be decreses in upthrust floating in water. Hence V will decreses.