Questions
A 100 watt immersion heater is placed in a pot containing 1 litre of water at 20ºC. How long will it take to heat water to boiling temperature if 20% of the available energy is lost to surroundings?
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By Expert Faculty of Sri Chaitanya
a
60 minutes
b
70 minutes
c
44 minutes
d
32 minutes
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Correct option is B
Given P of the heater is 100W
Heat required to boil water
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