AIIMS2002Physics-Thermodynamics
AIIMS 2002 Physics Greenhouse Effect Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Assertion : The earth without its atmosphere would be inhospitably cold.
Reason : All heat would escape in the absence of atmosphere.
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C
Assertion is true but Reason is false.
D
Both Assertion and Reason are false.
Correct Answer
Option A
Detailed Explanation
Heat radiated out by earth is reflected back by the atmosphere. In the absence of atmosphere, all the heat will escape from earth’s surface which will make the earth inhospitably cold. The atmosphere helps in maintaining the temperature through convection of heat.
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