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| Q. | Why does a black board appears black in color? | 
| A. | It reflects black color | 
| B. | It absorbs black color | 
| C. | It reflects all colors | 
| D. | It absorbs all the colours | 
| Answer» D. It absorbs all the colours | |
| Explanation: When  white  light  falls  on  an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body. | |
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