A) 15 min
B) 20 min
C) 7.5 min
D) 25 min
Correct Answer: B
Solution :
When heaters are connected in series, the time taken to boil same amount of water will be\[{{t}_{1}}+{{t}_{2}}\] \[=10+10=20\,\min \]You need to login to perform this action.
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