Question

Water falls from a height of 210 m. Assuming whole of energy due to fall is converted into heat, the rise in temperature of water would be:
1) 1°C
2) 0.5°C
3) 0.1°C
4) 0.05°C​

Answer 1

Answer:

the answer to this question is option 2 ( 0.5 )

Explanation:

Δθ=0.0023h

    = 0.0023×210

    = 0.483

   = approx 0.5 ..... so option c is the answer to your question

Answer 2

Answer:

The entire potential energy of the waterfall will be converted into heat energy.

mgH=mCδT

10×210=4200×δT

Thus, the rise in temperature will be close to 0.5oC.