Final answer:
Yellow light has a longer wavelength and lower frequency compared to purple light, which has a shorter wavelength and higher frequency. Consequently, purple light has higher energy.
Step-by-step explanation:
Comparing yellow and purple visible light involves examining their respective wavelengths, frequencies, and radiant energies. Yellow light, being closer to red, has a longer wavelength and lower frequency than purple light. Conversely, purple light, which is closer to violet, has a shorter wavelength and a higher frequency. Since radiant energy is inversely proportional to wavelength, purple light carries more energy than yellow light.