An object looks green in white light. Now the white light is passed through a clear blue plastic on the same object. What colour will the object appear to be?

Options

A. Green
B. Magenta
C. Black
D. Red

Explanation

To solve the problem of what color the object will appear when white light is passed through a clear blue plastic, we can follow these steps:

### Step 1: Understand the Object's Color in White Light
- The object appears green when illuminated by white light. This means that the object reflects green light and absorbs all other colors in the white light spectrum.

### Step 2: Analyze the Effect of the Blue Plastic
- When white light passes through a clear blue plastic, the plastic will filter the light. It will only allow blue light to pass through and absorb all other colors (red, yellow, green, etc.).

### Step 3: Determine the Interaction of Colors
- After the white light passes through the blue plastic, only blue light reaches the object. The object, which reflects green light, will not reflect blue light because it is not capable of reflecting that color.

### Step 4: Conclude the Color Appearance
- Since the object cannot reflect blue light (it reflects green), it will absorb the blue light that reaches it. Therefore, the object will not reflect any light and will appear black.

### Final Answer
The object will appear black when white light is passed through a clear blue plastic.

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