Question

please solve this question

Answer 1

Rate of heat flow from higher temperature to lower temperature. Rate of heat of transfer between the hot or cold body depends upon the difference between them. That mean by difference higher will be heat transfer rate from hotter to colder body in temperature difference is 20°C but beaker B is placed in open and so it will cool down itself in 5 minute and when we add water the temperature difference would be less than 20°C. So beaker A cool down itself rather than beaker B because higher temperature difference so temperature of B will be greater that of A temperature beaker higher