Question

Learning Task 2
Guide questions
1. Compare the energy, frequency and wavelength of the following:
A. Microwave and UV
B. Radiowave and microwave
X-ray and gamma rat
C. X-ray and gamma ray

2. Relate the following properties of EM waves:
A. Wavelength and frequency
B. Frequency and energy
C. Wavelength and energy

Answer 1

Answer:

dddd dddd ghbhbbbbbbbb

Answer 2

EM waves

Explanation:

1) Compare the energy, frequency and wavelength of the following:

• Microwave and UV-

$\begin{center}\begin{tabular}{ c c c c } Wave & Energy & Frequency & Wavelength\\ \\ Microwave & 1.2 \times 10^{-3}meV - 1.24meV & 300GHz - 300MHz & 1mm-1m\\ \\ UV & 3eV-124 eV & 30PHz-790THz & 10nm-400nm \end{tabular}\end{center}$

• Radiowave and microwave-

$\begin{center}\begin{tabular}{ c c c c } Wave & Energy & Frequency & Wavelength\\ \\ Microwave & 1.2 \times 10^{-3}meV - 1.24meV & 300GHz - 300MHz & 1mm-1m\\ \\ Radio wave & 12.4feV-1.24 meV & 300GHz-3Hz & 1mm-1km \end{tabular}\end{center}$

• X-ray and gamma-ray

$\begin{center}\begin{tabular}{ c c c c } Wave & Energy & Frequency & Wavelength\\ \\ X-ray &120eV - 120keV & 30EHz - 30PHz & 0.01mm-10nm\\ \\ Gamma ray & 100keV-300GeV & \geq 10EHz & \leq 0.01nm \end{tabular}\end{center}$

2) Relate the following properties of EM waves:

• Wavelength and frequency

             $v = \dfrac{c}{\lambda}$

• Frequency and energy

             $E = hv$

• Wavelength and energy

             $E = \dfrac{hc}{\lambda}$