A monochromatic light wave in vacuum has frequency f₀ and wavelength l₀.Which of the following are also possible frequency and wavelength combinations for a monochromatic light wave in vacuum? A)2f₀,2l₀ B)f₀/2,l₀/2 C)2f₀,l₀/2 D)None of the above are possible.

Question

Quizplus · Accepted Answer

According to the equation c = λf, where c is the speed of light, λ is the wavelength, and f is the frequency, we can see that frequency and wavelength are inversely proportional. Therefore, if the frequency is doubled, the wavelength will be halved and vice versa. 
Option A is not possible because if the frequency is doubled, the wavelength will be halved, not doubled. 
Option B is not possible because if the frequency and the wavelength are halved, the speed of light will be reduced to half, which is not possible in a vacuum. 
Option C is possible because if the frequency is doubled, the wavelength will be halved, which satisfies the equation. 
Option D is incorrect because option C is possible.

A Monochromatic Light Wave in Vacuum Has Frequency F0 and Wavelength

A Monochromatic Light Wave in Vacuum Has Frequency F₀ and Wavelength