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Question: Answered & Verified by Expert
The height of a waterfall is $50 \mathrm{~m}$. If $g=9.8 \mathrm{~ms}^{-2}$ the difference between the temperature at the top and the bottom of the waterfall is:
PhysicsThermal Properties of MatterWBJEEWBJEE 2009
Options:
  • A $1.17^{\circ} \mathrm{C}$
  • B $2.17^{\circ} \mathrm{C}$
  • C $0.117^{\circ} \mathrm{C}$
  • D $1.43^{\circ} \mathrm{C}$
Solution:
1099 Upvotes Verified Answer
The correct answer is: $0.117^{\circ} \mathrm{C}$
$\frac{m g h}{J}=m s \Delta t \Rightarrow \Delta t=0.117^{\circ} \mathrm{C}$

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