Question

what is the correct order of the visible light spectrum starting with the longer wavelength? options: red, orange, yellow, green, blue, indigo, violet; red, yellow, orange, blue, violet, indigo; green, yellow, blue, indigo, red, orange; violet, indigo, blue, green, yellow, orange, red

Explanation:

The visible light spectrum in order of decreasing wavelength (starting with the longest) is Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROYGBIV). We check each option:

• First option (yellow card): Red, orange, yellow, green, blue, indigo, violet – matches the correct order (longest to shortest wavelength as Red has the longest in visible spectrum, then orange, etc., ending with violet which has the shortest).
• Second option (purple card): Incorrect order (mixes yellow and orange, wrong sequence).
• Third option (orange card): Incorrect order (green, yellow, blue... then indigo, red, orange – red should be first for longest wavelength).
• Fourth option (teal card): Incorrect order (starts with violet which has short wavelength, should start with red).

Answer:

The correct option is the first one (the yellow - colored option) with the order: Red, orange, yellow, green, blue, indigo, violet