24. A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D>>d) as shown in figure. If it is burning at the rate of 2cm/hour then the top of the candle will
(a) Remain at the same height
(b) Fall at the rate of 1 cm/hour
(c) Fall at the rate of 2 cm/hour
(d) Go up the rate of 1cm/hour
Answer-b
(9)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)