Question

The wave number range of microwaves are greater than

• A. ${10}^2{m}^{-1}$
• B. ${10}^6{m}^{-1}$
• C. ${10}^8{m}^{-1}$
• D. All of the above

Answer 1

The correct option is A ${10}^2{m}^{-1}$

From the figure, wavelength of microwave = 1 cm
wavenumber = $\frac{1}{\lambda }$ = $\frac{1}{0.01m}$ = 100 $m^{-1}$.