Question

Light has what range of wavelength?     

A. 700 nm to 400 nm  
B. 400 nm to 10 nm  
C. 0.3 nm to 0.001 nm  
D. 10 nm to 0.01 nm

Answer 1

It would be A. 700 nm to 400 nm :)
This "visible light" corresponds to a wavelength range of 400 - 700 nanometers (nm) and a color range of violet through red.

Answer 2

The correct answer is option A. "700 nm to 400 nm".

Step-by-step explanation:

Visible light has a wavelength range of 700 nm to 400 nm, ranging from violet to red colors respectively. Wavelengths from 10 nm to 400 nm are ultraviolet, invisible to the human eye but widely used for sterilization purposes. Wavelengths from 700 nm to 1 mm are infrared, which are also invisible to the human eye but have applications in the industry and military as detectors of heat.