Question

What wavelength would a green glass have?

Answer 1

Most likely between `510" nm"` and `570" nm"`.

Explanation:

My guess is the question is using "green" to describe the "type" of glass, and "green-yellow" to describe its colour.

Basically, we are told that a type of glass (which we will call "green glass") appears green-yellow in colour, and we are asked what wavelengths of light could produce this colour.

According to the light spectrum, the wavelength of green light is around `510" nm"`, and yellow light is around `570" nm"`. So, if an object (like "green glass") appears green-yellow in colour, its wavelength would be somewhere in this range—between `510"-"570" nm"`.