What colour has the lowest frequency in the spectrum of white light?
A
Red
B
Yellow
C
Indigo
D
Blue
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
A. Red
Red light has the longest wavelength and the lowest frequency compared to the other colors listed.
ROYGBIV: arranged in increasing frequency or decreasing wavelength.
Source: WAEC / JAMB / NECO Classroom Archive (Record #74563)