If a potato is placed on a pure paper plate If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not. This is because:

  • Potato contains water whereas paper does not contain water
  • Potato is mainly made up of starch whereas paper is mainly made up of cellulose
  • Potato transmits microwaves whereas paper reflects microwaves