A wax candle floats vertically in a liquid of density twice that of wax. The candle burns at the rate of $4\ cm/hr$ . Then, with respect to the surface of the liquid the upper end of the candle will
A wax candle floats vertically in a liquid of density twice that of wax. The candle burns at the rate of $4\ cm/hr$ . Then, with respect to the surface of the liquid the upper end of the candle will
- A
fall at the rate of $4\ cm/hr$
- B
fall at the rate of $2\ cm/hr$
- C
rise at the rate of $2\ cm/hr$
- D
remain at the same height
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