AP EAMCET · PHYSICS · Thermodynamics
Assertion (A) A room can be cooled by opening the door of a refrigerator in it.
Reason (R) Heat always flows from a body at higher temperature to a body at lower temperature.
- A (A) and (R) are true and R is the correct explanation of (A).
- B (A), (R) are true and (R) is not the correct explanation of (A).
- C (A) is true but (R) is false
- D (A) is false but (R) is true.
Answer & Solution
Correct Answer
(D) (A) is false but (R) is true.
Step-by-step Solution
Detailed explanation
When door of refrigerator is opened, the room's heat is discarded in the room itself and heat that is created in working of refrigerator is also discarded in the room, making room hotter. So, Assertion is incorrect but Reason is correct.
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