Question
Question: 0.93 watt-hour of energy is supplied to a block of ice weighing 10 gm. It is found that-...
0.93 watt-hour of energy is supplied to a block of ice weighing 10 gm. It is found that-
A
Half of the block melts
B
The entire block melts and the water attains a temperature of 40
C
The entire block just melts
D
The block remains unchanged
Answer
The entire block just melts
Explanation
Solution
Energy supplied = 0.93×3600 joules = 3348 joules
Heat required to melt 10 gms of ice= 10×80×4.18 =3344 J
Hence block of ice just melts.