In two beakers (A and B) 50 ml water of about 70°C cach is taken. Then in beaker A, 50 m
f water of about 30°C is added and after 5 minutes, in beaker B, 50 ml of water of about 30°C
added. What would observe if the temperatures of both beakers recorded immediately
Why?
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In A since the temperature of water will get down immediately after adding water at 30
o
C, the difference in temperature between the water in A to the atmosphere is less so heat transfer rate between the beaker A and atmosphere will reduce.
Whereas in case of beaker B, the temperature is higher for five minutes so the heat transfer rate from B will be high and then 30
o
C water is added which reduces the temperature further.
So after 5 minutes temperature of B will be less than A.
may it helps you
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