A calorimeter of negligible heat capacity contains 100 cc of water at 40°C. The water cools to 35°C in 5 minutes. The water is now replaced by K-oil of equal volume at 40°C. Find the time taken for the temperature to become 35°C under similar conditions. Specific heat capacities of water and K-oil are 4200 "J/kg-K" and 2100 "J/kg-K" respectively. Density of K-oil = 800 "kg//m^3.

A calorimeter of negligible heat capacity contains 100 cc of water at

1.	A calorimeter of negligible heat capacity contains 100 cc of water at 40°C. The water cools to 35°C in 5 minutes. The water is now replaced by K-oil of equal volume at 40°C. Find the time taken for the temperature to become 35°C under similar conditions. Specific heat capacities of water and K-oil are 4200 "J/kg-K" and 2100 "J/kg-K" respectively. Density of K-oil = 800 "kg//m^3.
Answer» 5 min 3 min 2 min 1 min Answer :C