Physics · Oct / Nov 2023 · Paper 11 · Question 16

A student on a camping expedition cools a sealed bottle of water which is at the same temperature as the surrounding air. Which method cools the water at the greatest rate?

1. AWrap the bottle in aluminium foil and place it in a shady place.
2. BWrap the bottle in dry, white paper and put it in a sunny place.
3. CWrap the bottle in foam and put it in a breeze.
4. DWrap the bottle in wet paper and put it in a breeze.

As printed in the paper