1. The problem statement, all variables and given/known data A microwave oven operates by injecting electromagnetic waves with a frequency of 2.45 GHz into the cavity formed by the conducting metal shields on each face of the oven box. Explain, with the aid of sketches and simple calculations, why it is generally necessary to rotate the food using a turntable during operation 3. The attempt at a solution My guess is something to do with standing waves, and waves reflecting off of the metal shields causing interference and so different strengths of the EM waves will hit the food, so by rotating the turntable you get a more evenly cooked food. However this is a 4 mark question, and I don't see why I need the frequency. Help much appreciated!!