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The main reason for making the cover of a vacuum flask airtight is to prevent...

Physics
JAMB 2000

The main reason for making the cover of a vacuum flask airtight is to prevent heat loss by

  • A. convection
  • B. conduction
  • C. radiation
  • D. evaporation
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Correct Answer: Option A
Explanation

The airtight stopper prevents heat loss by convection because it is tightly sealed.

There is an explanation video available below.

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Explanation Video

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