Physics (Essay) Paper 2 May/June 2015

Question 4

State three ways of increasing the rate of cooling of a cup of hot tea.

Observation

This was another popular question among the candidates.  It was well attempted.  Some candidates however, failed to give correct interpretation to the question and so gave wrong answers.

The expected answers are:

-  increasing the rate of evaporation
-   reducing the ambient temperature
-   stirring the tea (continuously).