Using a \"standard value\" for the speed of light of c = 3 times 10^8 m/sec. the

Question

Using a "standard value" for the speed of light of c = 3 times 10^8 m/sec. the determine the quantity requested in each case: (all radiations are assumed to travel in air). WNAA frequency 90.1 MHz (MegaHertz) Wavelength? Low Infrared frequency 1.2 times 10^12 Hz Wavelength? wavelength _____. wavelength _____. "WiFi" EM waves have a wavelength of lambda = 2.5 cm. frequency? Orange light has a wavelength of 600 nm (nanometers) frequency? frequency _____ frequency _____ a) List the following EM waves in order of their frequency (lowest to highest): ultraviolet, infrared Radio/Tv, Gamma Ray, Visible, X-ray Lowest _____.

Explanation / Answer

=c where is the wavelength, is the frequency and c is the speed of light

=c /

ist blank) =3.32m

2nd blank) =2.5 E-4 m

v=c/

3rd blank) v=3*10^8/(2.5*10^-2)=1.2*10^10 Hz

4th blank)v=3*10^8/(6*10^-7)=5*10^14 Hz

5th blank) radio/tv, infrared,visible, ultraviolet , X-ray , Gamma ray

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