Answer:
Violet
Step-by-step explanation:
The visible light or spectrum is an example of an electromagnetic waves. This visible light are separated into their component colour using a glass prism. This light passes through the glass prism and split into different color component known as ROYGBIV.
This are arranged according to their increasing frequency and decreasing wavelength.
R - Red
O - orange
Y - yellow
G - green
B - blue
I - indigo
V - violet
Since they decrease in wavelength from red to violet, this means that violet will have the shortest wavelength