A red cloth seen in green light will, appear

Options

A. red
B. green
C. orange
D. black

Explanation

To solve the question "A red cloth seen in green light will appear," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Color Perception**:
- The color of an object is determined by the wavelengths of light it reflects. When white light (which contains all colors) shines on an object, the object absorbs certain wavelengths and reflects others. The color we perceive is the color of the light that is reflected.

2. **Analyzing the Red Cloth**:
- A red cloth appears red because it reflects red wavelengths of light and absorbs other colors (like green, blue, etc.).

3. **Introducing Green Light**:
- Now, if we shine green light on the red cloth, we need to consider what happens. The green light contains only the wavelengths corresponding to the color green.

4. **Absorption of Light**:
- Since the red cloth does not reflect green light (it absorbs it), there will be no red light reflected back to our eyes.

5. **Conclusion**:
- As a result, when we look at the red cloth under green light, it will not reflect any color back to us. The absence of reflected light will make the cloth appear black.

### Final Answer:
The red cloth seen in green light will appear **black**.

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