Questions: Which color of visible light has the longest wavelength?
a violet
b orange
c yellow
d red
Transcript text: Which color of visible light has the longest wavelength?
a violet
b orange
c yellow
d red
Solution
Solution Steps
Step 1: Understanding the Visible Light Spectrum
The visible light spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. It ranges from approximately 380 nanometers (nm) to 750 nm in wavelength. The colors of visible light, in order of increasing wavelength, are violet, blue, green, yellow, orange, and red.
Step 2: Identifying the Longest Wavelength
In the visible light spectrum, red light has the longest wavelength, typically around 620 to 750 nm. As we move from violet to red in the spectrum, the wavelength increases.
Final Answer
The color of visible light with the longest wavelength is \(\boxed{\text{d red}}\).