A) 50s
B) 420s
C) 105s
D) 210s
Correct Answer: D
Solution :
L is the latent heat of vaporization of water; the heat required for producing 1 g of steam,\[L=540\text{ }cal=540\times 4.2=2268\text{ }J\] Energy supplied\[=1080\text{ }J/s\] Time required to boil 100 g of water \[=540\times 4.2\times 100/1080=210\text{ }s\]You need to login to perform this action.
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