Final answer:
The visible light spectrum's order based on wavelength from longest to shortest is red, yellow, blue, and the order based on frequency from lowest to highest is the reverse: blue, yellow, red.
Step-by-step explanation:
Understanding the Visible Light Spectrum
The visible light spectrum consists of colors that can be seen by the human eye. Each color is associated with a specific wavelength of electromagnetic radiation, and this wavelength determines the color's position within the spectrum. Red light has the longest wavelength, while violet has the shortest. The mnemonic 'ROY G BIV' helps remember the order of colors based on their wavelengths - Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
When ordering the colors yellow, blue, and red based on wavelength, red has the longest and blue has the shortest. Thus, the correct order from longest to shortest wavelength is red, yellow, blue. Frequency is inversely related to wavelength, meaning as wavelength increases, frequency decreases. Therefore, the order from lowest to highest frequency is the reverse: blue, yellow, red.
Considering this, the correct answers are:
Part A: wavelength: red, yellow, blue
Part B: frequency: blue, yellow, red