The correct options are:
a) will have a frequency of $10^{9} \mathrm{~Hz}$
c) will have a wavelength of $0.3 \mathrm{~m}$
d) fall in the region of radiowaves
The correct options are:
a) will have a frequency of $10^{9} \mathrm{~Hz}$
c) will have a wavelength of $0.3 \mathrm{~m}$
d) fall in the region of radiowaves