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Class 10 Science Medium Mcq English Medium

The air just above a fire or radiator is typically

Question
The air just above a fire or radiator is typically
cooler and denser than the air further up
hotter and less dense (lighter) than the cooler air above it
exactly the same density as the air above it
completely opaque to light
Answer
hotter and less dense (lighter) than the cooler air above it
Detailed Explanation
The chapter states the air just above a fire becomes hotter than air further up, and hotter air is lighter (less dense).
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