Answer
Answer : Red light
Red light has a wavelength range of 620-750 nm. Therefore light with a wavelength of 700 nm is red light.
Work Step by Step
The wave length ranges for different colored lights are :
Violet light: 380-450 nm
Blue light 450-495 nm
Green light 495-570 nm
Yellow light 570-590 nm
Orange light 590-620 nm
Red light 620--700--720 nm ***
