Two containers, one painted black and the other painted white, have been kept in sunlight for one hour in the afternoon. Choose the correct observation.
The black container becomes hotter than the white container.
When two containers, one painted black and the other white, are exposed to sunlight, the color of the container affects how much heat they absorb. This is due to the different properties of light absorption and reflection of different colors.
Explanation:
Black Surfaces: Black color absorbs all wavelengths of light and converts them into heat. This leads to an increase in temperature of the black container as it absorbs most of the solar radiation.
White Surfaces: A white surface, on the other hand, reflects most of the wavelengths of light, absorbing less energy, and thus it does not get as hot as a black surface under direct sunlight.
Given these properties:
- The black container will absorb more heat than the white container due to its high absorption rate of light.
- The white container reflects most of the light, keeping it cooler compared to the black container.
Therefore, when both containers are kept in the sunlight for an hour, the black container becomes hotter than the white container.
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