End of chapter exercises

What is the energy of a photon of EM radiation with a frequency of \(\text{3} \times \text{10}^{\text{8}}\) \(\text{Hz}\)?

What is the energy of a photon of light with a wavelength of \(\text{660}\) \(\text{nm}\)?

What is the energy of a photon of light with a frequency of \(\text{13}\) \(\text{THz}\)?

What is the wavelength of a photon of light with a frequency of \(\text{101,3}\) \(\text{kHz}\)?

What is the energy of a photon of light with a wavelength of \(\text{532}\) \(\text{nm}\) and one with a frequency of \(\text{13}\) \(\text{GHz}\) and which has the longer wavelength?

List the main types of electromagnetic radiation in order of increasing wavelength.

List the main uses of:

1. radio waves

2. infrared

3. gamma rays

4. X-rays

Explain why we need to protect ourselves from ultraviolet radiation from the Sun.

List some advantages and disadvantages of using X-rays.

What precautions should we take when using cell phones?

Write a short essay on a type of electromagnetic waves. You should look at uses, advantages and disadvantages of your chosen radiation.

Explain why some types of electromagnetic radiation are more penetrating than others.