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A 10 watt electric heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of water and the container rises by K in 15 minutes. The contain r is then emptied, dried and filled with 2 kg of oil. The same heater now raises the temperature of container-oil system by K in 20 minutes. Assuming that there is no heat loss in the process and the specific heat of water as 4200 , the specific heat of oil in the same unit is equal to

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Text SolutionText solutionverified iconVerified

Power of heater W
Let the specific heat of container be   and that of oil be .
Let mass of container be .
For water-container system :
Given : kg       K       s          
Heat given  
                      ......(1)

For oil-container system :
Given : kg       K      
Heat given  
         
       
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Question Text
A 10 watt electric heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of water and the container rises by K in 15 minutes. The contain r is then emptied, dried and filled with 2 kg of oil. The same heater now raises the temperature of container-oil system by K in 20 minutes. Assuming that there is no heat loss in the process and the specific heat of water as 4200 , the specific heat of oil in the same unit is equal to
Answer TypeText solution:1
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