MHT CET 2025 Physics question
A calorimeter contains 10 g of water at 20°C. The temperature fall to 15°C in 10 min. when container contains 20 g of water at 20°C, it takes 15 min. for the temperature to become 15°C. the water equivalent at the calorimeter is
Answer: (C)
Solution
Let the water equivalent be g. The rate of heat loss is the same in both runs (same temperature range and surroundings). Heat lost in the first run in 10 min and in the second in 15 min. Equal
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