Electromagnetic Waves
1. Gamma-ray bursters are objects in the universe that emit pulses of
gamma rays with high energies. The frequency of the most energetic
bursts has been measured at around 3.0 x 10- Hz. What is the wave-
length of these gamma rays?
2. What is the wavelength range for the FM radio band (88 MHz-108 MHz)?
3. Shortwave radio is broadcast between 3.50 and 29.7 MHz. To what range
of wavelengths does this correspond? Why do you suppose this part of
the spectrum is called shortwave radio?
What is the frequency of an electromagnetic wave if it has a wavelength
of 10 km?
5. The portion of the visible spectrum that appears brightest to the human
eve is around 560 nm in wavelength, which corresponds to yellow-green.
What is the frequency of 560 nm light?
6. What is the frequency of highly energetic ultraviolet radiation that has a
wavelength of 125 nm?