One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be
- 80°C (b) more than 50°C but less than 80°C
- 20°C (d) between 30°C and 50°C
Heat flows from objects at higher temperatures to objects at lower temperatures .
- When the two are mixed, heat will flow to 30°C water from 50°C water .
- So the 50°C water will lose heat (reduce temperature), while 30°C water will increase in temperature .
So, the correct answer is (d) The temperature of the mixture will be between 30°C and 50°C.