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Why is it hotter at the same distance ov...

Why is it hotter at the same distance over the top of a fire than in front of it?

A

Air conducts heat upwards

B

Heat is radiated upwards

C

Convection takes more heat upwards

D

Convection, conduction and radiation all contribute significantly transferring heat upwards

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • It is hotter at some distance over the fire than in front of it because

    A
    heat is radiated upwards only
    B
    convection heat takes downwards only
    C
    air conducts heat upwards only
    D
    convection takes more heat upwards

  • It is hotter for the same distance over the top of a flame than it is on one sid of it because

    A
    more heat is radiated upwards
    B
    air conducts more heat upwards
    C
    convection takes heat upward
    D
    of some reason other than the above three

  • Assertion It is hotter over the top of a fire than at the same distance on the sides . Reason In the upwared direction , the heat propagate through convection.

    A
    Both assertion and reson are true and reason is the correct explanation of assertion
    B
    Both assetion and reason are true but reason is not the correct explanation of assertion
    C
    Assertion is true but reason is false
    D
    Both assetion and reason are flase

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