1. What is the principal difference between a radio wave and light? Between light and X-rays? 2. How does the frequency of an electromagnetic wave compare with the frequency of the vibrating electrons...

1. What is the principal difference between a radio wave and light? Between light and X-rays?

2. How does the frequency of an electromagnetic wave compare with the frequency of the vibrating electrons that produces it?

3. What is the law of reflection?

4. Does the law of reflection hold for diffuse reflection? Explain.