Question

1. which shows the correct order of colors in the visible - light spectrum, starting with the longest wavelength (700 nm) and ending with the shortest wavelength (400 nm)? red, yellow, orange, blue, violet, green green, blue, violet, yellow, red, orange red, orange, yellow, green, blue, violet violet, blue, green, yellow, orange, red

Explanation:

The visible - light spectrum, in order of decreasing wavelength (from longest to shortest), is red, orange, yellow, green, blue, violet.

Answer:

red, orange, yellow, green, blue, violet