22. Describe what happens to the pitch produced by the bottles when they were struck as they contained more water? A. The more water added, the lower the pitch. B. The more water added, the higher the pitch. C. The lesser water added, the lower the pitch D. The lesser water added, the higher the pitch. 23. How will you compare the wavelength of infrared to red spectrum of light? A. Longer wavelength C Higher frequency B. Shorter wavelength D. Shorter frequency 24. What is the wavelength of ultraviolet compared to violet spectrum? A. Longer wavelength C Higher frequency B. Shorter wavelength D. Shorter frequency 25. The visible light is the only electromagnetic wave that can activate human A. Eye B. Vision C. Sense D. Image 26. What color will be produced when you combined red and green? A. Magenta B. Black C. Yellow 27 The primary colors of pigments.​