Question

Comparing radio waves and ultraviolet light, which of the following is true?

Answer 1

1. Radiowaves have higher frequency, same speed, and longer wavelength than ultraviolet light.
2. Radiowaves have lower frequency, same speed, and longer wavelength than ultraviolet light.
3. Radiowaves have lower frequency, slower speed, and longer wavelength than ultraviolet light.
4. Radiowaves have lower frequency, faster speed, and shorter wavelength than ultravio- let light.

Answer 2

3

Answer 3

3 is not the answer as all electromagnetic radiation travels the same speed in a given medium. The constant speed rules out number 3 and 4. Frequency varies inversely with wavelength, so number 1 is also ruled out.

The correct answer is 2.

Answer 4

Oh right right! Hence my hatred of long options!