(TCO 3) This question requires a numeric or algebraic answer. In order to receiv

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What is the frequency of blue light that has a wavelength of 450 nm? What is the frequency of red light that has a wavelength of 650 nm? What is the index of refraction of a material in which the red light wavelength is 450 nm? (Points : 20)

Explanation / Answer

We know that Speed = frequency*wavelength Where the speed of light is universal constant approximated to 3*10^8 m/sec Frequency blue light=speed/wavelength =(3*10^8) /(450*10^-9) sec^-1 =666.67*10^12 sec^-1 Frequency red light=speed/wavelength =(3*10^8) /(650*10^-9) sec^-1 =461.5*10^12 sec^-1 For refraction n1L1=n2L2 Where n1 is refractive index of first material L1 is wavelength in that material n2 is refractive index of first material L2 is wavelength in that material Substituting the values we get N2=650/450 =1.444

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