HW 1.9  [ENDORSED]


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Ani Boyadjian 1A
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

HW 1.9

Postby Ani Boyadjian 1A » Sun Apr 15, 2018 8:31 pm

For the last line of problem 9, I converted nm to m and used the formula v=c/lambda to get the frequency. However I keep getting 1.2*10^-1 Hz whereas the solution manual says that it's supposed to be 1.2*10^17 Hz. Can somebody help me figure this out please? Thank you!

MeghetyManoyan1A
Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

Re: HW 1.9  [ENDORSED]

Postby MeghetyManoyan1A » Sun Apr 15, 2018 8:38 pm

When you convert nm to meters, you get 2.5x10^-9 meters. Using the formula, you need to divide c (the speed of light), which is 3.0x10^8 m/s, by the wavelength, which you found to be 2.5x10^-9 meters. This should give you 1.2x10^17 Hz as the frequency.


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