If a green electric bulb is installed in a room, the red cloth will appear

If a green electric bulb is installed in a room, the red cloth will appear black colored (Option C). This occurs because objects appear colored based on the wavelengths of light they reflect. A red cloth primarily reflects red wavelengths and absorbs other colors. When illuminated by green light from the bulb, the cloth absorbs green light and reflects only red. However, because the cloth is designed to reflect red light, it does not reflect any light from the green bulb, making it appear dark or black under these conditions. This phenomenon illustrates how the color of an object depends on both the wavelengths of light it reflects and the light sources illuminating it. Understanding these interactions is crucial in various applications, including lighting design, color perception, and material selection for achieving desired visual effects.