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Question
The earth receives heat from the sun by ______.
Options
radiation
white
conduction
blue
convection
bad conductor
good conductor
black
reflection
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Solution
The earth receives heat from the sun by radiation.
Explanation:
Radiation is the transfer of energy through electromagnetic waves, such as light and infrared radiation. These waves travel through the vacuum of space, without the need for a medium, and reach the Earth, where they are absorbed, warming the planet.
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| Column-I | Column-II | ||
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| 3. | Cubical expansion | (c) | 1.381 X 10-23 JK-1 |
| 4. | Cubical expansion | (d) | change in length |
| 5. | Boltzmann constant | (e) | change in area |
