Question

The height of the Niagara falls is $50$ metres, $(1cal=4.2J).$ Assume its mechanical energy can be completely converted into heat energy.

• A. Heat energy gained by each gram of water is $49\times {10}^{5}cal$
• B. Rise in temperature of water is ${0.166}^{o}C/g$
• C. Rise in temperature of water is ${0.12}^{o}C$
• D. Heal energy gained is $500joule/g$

Answer 1

Answer: (C), (D)

The correct options are
C Rise in temperature of water is ${0.12}^{o}C$
D Heal energy gained is $500joule/g$