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In two experimentsb with a continous flo...

In two experimentsb with a continous flow calorimeter to determine the specific heat capacity of a liquid, an input power of 60 W produced a rise of 10 K in the liquid. When the power was doubled, the same temperature rise was achieved by making the rate of flow of liquid three times faster. The power lost to the surrounding in each case was-

A

20 W

B

30 W

C

40 W

D

120 W

Text Solution

Verified by Experts

The correct Answer is:
2
`DeltaT=10K`
P= 60 W
`P=mSDeltaT+P'`
60=mS`xx10+P'`
120=3m`xxSxx10+P'`
`2msxx10=60`
`msxx10=30`
hence P'=30
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