In the visible spectrum the color has a lower frequency than the

question 35 options:

orange; green

blue; yellow

yellow; red

violet; blue

In the electromagnetic spectrum the lower the wavelength some light has, the higher will be its frequency. This can be concluded from the equation c=λ*f where c is the speed of light, λ is the wavelength and f is the frequency. Orange color has a longer wavelength and smaller frequency than green color. So the correct answer is: In the visible EM spectrum the color ORANGE has a lower frequency than the color GREEN. 

Answer: fn = wcos50 = 38.89(9.81)(cos50) = 245.23 n