Dark-coloured objects are good for

Options

A. conduction
B. convection
C. reflection
D. absorption

Answer

### Step-by-Step Solution:

1. **Understanding Dark-Colored Objects**: Dark-colored objects, particularly black ones, have unique properties when it comes to heat and light. They are known to absorb light and heat effectively.

2. **Absorption of Light**: When light hits a dark-colored object, it is absorbed rather than reflected. This means that dark objects can take in more energy from light sources, making them warmer than lighter-colored objects under the same conditions.

3. **Radiation of Heat**: Not only do dark-colored objects absorb heat well, but they also radiate heat effectively. This means that when they are heated, they can lose that heat to the surrounding environment efficiently.

4. **Conclusion**: Therefore, dark-colored objects are good for absorbing and radiating heat. This property makes them useful in various applications, such as solar panels, where maximizing heat absorption is crucial.

### Final Answer:
Dark-colored objects are good for absorbing and radiating heat.

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