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Consider a classroom that is roughly 5mx...

Consider a classroom that is roughly `5mxx10mxx3m`. Initially `T=27^(@)`C and p=1 atm. There are 50 people in a insulated class losing energy to the room at the average rate of 150 Watt per person. How long can they remain in class if the body temperature is `42^(@)` C and person feels uncomfortable above this temperature. Heat capacity of air=`(7//2)R`

A

`4.34` minutes

B

`5.91` minutes

C

`6.86` minutes

D

`7.79` minutes

Text Solution

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The correct Answer is:
B
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RESONANCE-THERMODYNAMICS-Exercise -2 Part-I: Only one option correct type
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