Assertion: $A$ thermos bottle consists of a double-walled glass vessel with the space between the two walls evacuated,so that the heat transfer between the contents of the bottle and the outside is minimized.
Reason: The vacuum between the two walls inhibits the heat transfer by the radiation mechanism.
Which of the following is correct?

  • A
    Assertion is true,Reason is true and Reason is the correct explanation for Assertion.
  • B
    Assertion is true,Reason is true but Reason is not the correct explanation for Assertion.
  • C
    Assertion is true but Reason is false.
  • D
    Assertion is false but Reason is true.

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