When you use a microwave oven to increase the temperature of a cup of hot chocolate, which type of heat transfer is taking place?

1 Answer
Jun 27, 2016

Using electromagnetic waves


In a microwave oven electromagnetic radiation is passed. The frequency of radiation is in microwave range (100s of Mega Hz). It causes the water molecules in the food to oscillate with the same frequency as they are polar in nature. This agitation causes the food to heat up.