If orange-red colour is absorbed from white light, the observed colour is

Options

A. yellow
B. orange
C. blue
D. violet

Answer

To determine the observed color when orange-red is absorbed from white light, we can follow these steps:

### Step 1: Understand Color Absorption
When a substance absorbs certain colors of light, it reflects or transmits the complementary color. The complementary color is the color that, when combined with the absorbed color, produces white light.

### Step 2: Identify the Absorbed Color
In this case, the absorbed color is orange-red.

### Step 3: Determine the Complementary Color
To find the complementary color of orange-red, we can refer to a color wheel. The complementary color is directly opposite the absorbed color on the wheel.

### Step 4: Analyze the Color Wheel
On the color wheel:
- Orange is opposite blue.
- Red is opposite cyan (which is a mix of green and blue).

Since we are considering orange-red, we can conclude that the complementary color will be a mix of blue and green.

### Step 5: Choose the Closest Option
From the options provided (yellow, orange, blue, and violet), the closest complementary color to orange-red is blue.

### Conclusion
Therefore, if orange-red color is absorbed from white light, the observed color is **blue**.

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