Question:
Heat from the sun reaches the earth by convection.
Air can be heated only by convection.
Heat from the sun reaches the earth by convection.
Air can be heated only by convection.
Updated On: Jul 28, 2022
- If both the assertion and reason are true and reason explains the assertion.
- If both the assertion and reason are true but reason does not explain the assertion.
- If assertion is true but reason is false.
- If assertion is false but reason is true.
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The Correct Option is D
Solution and Explanation
Heat from sun reaches to earth by radiation so assertion is wrong and air is heated only by convection so reason is correct statement.
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Concepts Used:
Heat Transfer
What is Heat Transfer?
It is defined as the movement of heat across the border of the system due to a difference in temperature between system and its surroundings.
How is Heat Transferred?
Heat can travel from one place to another in several ways. The different modes of heat transfer include:
- Conduction - Heat flows from things with higher temp to objects with lower temp.
- Convection - Movement of liquid molecules from higher temp regions to lower temp regions.
- Radiation - Radiant heat is present in every other way in our daily lives. Thermal radiations are also known to as radiant heat. Thermal radiation is generated by the emission of electromagnetic waves.
