The door of a microwave oven must let people see the food inside but stop microwaves from leaving the oven.
The table shows how four materials interact with visible light and microwaves.
Table
| Material | Visible light | Microwaves |
|---|---|---|
| W | transmitted | transmitted |
| X | absorbed | reflected |
| Y | transmitted | reflected |
| Z | reflected | absorbed |
Which material is most suitable for the window in the door?
Material W
Material Y
Material X
Material Z
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.