Written Laser Hair Removal Practice Exam

Ultraviolet light is made up of shorter wavelengths than visible light, making it invisible to the human eye. It also has more energy than visible light, which is why it is used for things like tanning and sterilizing. Option A is incorrect because visible light has longer wavelengths. Option B is incorrect because ultraviolet light is not visible to the human eye. Option C is incorrect because ultraviolet light is more energetic than visible light. Therefore, option D is the correct answer.