Can someone help with this i don't get it...explain to me too please? Thanks in advance!?

1)if a blue light has a wavelength of 550 x 10-9 (550 nanometers), what is the frequency of the light?
2) As you move from the blue region of the electromagnetic spectrum to the red region of the electromagnetic spectrum, what happens to the wavelengths of the light?
3)As you move from the blue region of the electromagnetic spectrum to the red region of the electromagnetic spectrum, what happens to the frequency of the light?
4)Is the frequency of radiation used in a microwave oven higher or lower than that of your favorite FM radio station broadcasting at 91.7 x 106 Hz?

Answer:
OK for # 1 you would use the equation.
frequency=c(speed of light)/wavelength. So therefore
frequency = (3.0x108meters/sec)/5.5x10-7me...
frequency=5.5x1014s-1

For # 2. Usually the blue end of the spectrum is around 200-300nm and the red is around 600-700nm. So therefore as you go from blue to red the wavelength increases.

For #3. The wavelength will increase. Looking at the equation in question #1 the wavelength is in the denominator and c is constant, therefore as the wavelength increases the frequency decreases.

For #4. Microwaves have a lightly lower frequency than infared energy. It is usually around 1x1012 hertz. Therefore the frequency of a microwave is much higher than your FM radio station.
1. frequency = constant/wavelength
v = c/n
v = (3 * 10^8)/(550 x 10^-9) =

http://www.1728.com/freqwave.htm...
1) f = c / v
c is the speed of the light
c = 3 x 10^8 m/s
f = 3 x 10^8 / 550 x 10^-9 = 5.45 x 10^14 Hz

2) The wawelenghts become bigger

3 ) The frequency becames smaller

4 ) In a microwave the frequency goes from300 MHz to 300 GHz so it is higher than FM radio
We know that wavelength of light=velocity of light/the frequency of the light. therefore frequencyof light=.
3*10^8ms-1/550*10^-9
as we move from blue end tothe red end velocity of light remaining constant the frequency of light decreases whereas the wavelength increases.higher as the radio waves have high wavelength.

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