Question

If λ_b, λ_g and λ_y are the wavelengths of blue, green and yellow light, which of the following is correct?

Options

• λ_y > λ_g > λ_b

• λ_y > λ_b > λ_g

• λ_g > λ_b > λ_y

• λ_b > λ_y > λ_g

Answer 1

λ_y > λ_g > λ_b

Explanation:

In the visible spectrum (VIBGYOR), wavelength increases from violet to red. Therefore, yellow has a longer wavelength than green, and green has a longer wavelength than blue.