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Black surfaces are poor absorbers of hea...

Black surfaces are poor absorbers of heat radiations.

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### Step-by-Step Solution: 1. **Understanding the Statement**: The statement claims that "black surfaces are poor absorbers of heat radiations." We need to analyze this claim to determine its validity. 2. **Setting Up the Experiment**: To investigate the claim, an experiment is conducted using two flasks. One flask is painted black, and the other is painted white. Both flasks are identical in size and volume. 3. **Heating the Flasks**: Both flasks are subjected to the same amount of heat radiation. For example, each flask receives 10 joules of heat for a duration of 10 minutes. 4. **Observing the Results**: After the 10-minute heating period, the temperature of both flasks is measured. It is observed that the black flask has heated more than the white flask. 5. **Conclusion**: The results indicate that black surfaces are actually good absorbers of heat. Therefore, the original statement that "black surfaces are poor absorbers of heat radiations" is false. 6. **Real-World Application**: This principle explains why people wear dark-colored clothing in winter to absorb more heat and stay warm, while light-colored clothing is preferred in summer to reflect heat and stay cool. ### Final Conclusion: Black surfaces are good absorbers of heat, contrary to the statement provided. ---
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