a candle of diameter d floats on a liquid in a cyylindrical container D(D>>d)

iif the burning rate at the top in 2 cm/hr thentop of candle will fall at rate of 1 cm /hr ??? how???????????????

Dear Student,
Please find below the solution to your problem.

Density of candle is half of the density of water. Therefore, it will always remain half in the water. Hence, if it burns 2 cm/h, the candle will come up by 1 cm from the water. Therefore, the top of the candle will fall at the rate of 1 cm/h.

Thanks and Regards