I got my answer but its not the same as the one in my book. My answer is 4.62*10^14 the book is same thing but *10^16. Heres the details(adsbygoogle = window.adsbygoogle || []).push({});

Wave length of 650nm is traveling through a vacuum(speed of light). what I did is took this formula

c(lightspeed = 3*10^8m/s)=l(wavelength)*f(frequency)

I did this

Am I right and the book is wrong. Because for all 4 questions the answer the book gives ends with 10^16 and I get 10^14.Code (Text):

c(lightspeed = 3*10^8)=L(wavelength)*f(frequency)

---------------------------------------------------------------------

L

thus leaves with

c

-- = f

L

filling in the variables c is constant so I want bother with that

3*10^8

--------------- = f

650*10^-9(convert to m from nm)

what I got is f = 4.62*10^14

Thank you for helping !

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# Homework Help: Finding frequency of light(simple physics)

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