A plastic bowl of soup is heated in a microwave oven. The soup becomes hot but the bowl stays cool.
Which statement explains this?
The plastic absorbs the microwaves, but the soup reflects most of them
The soup reflects the microwaves, but the plastic absorbs most of them
The soup absorbs the microwaves, but the plastic transmits most of them
The plastic reflects the microwaves, but the soup transmits most of them
51 exam-style questions on OCR GCSE Physics 5.3 Wave interactions, covering 5.3.1 Wavelength and how substances affect waves, 5.3.2 Wave velocity in different substances, 5.3.3 Convex and concave lenses, 5.3.4 Ray diagrams for reflection and refraction, and 5.3.5 Colour, absorption and reflection. Each one has a worked solution and a mark scheme showing where the marks go.