AIIMS 2003 Physics Convection Assertion Reason Question
Assertion : It is hotter over the top of a fire than at the same distance on the sides.
Reason : Air surrounding the fire conducts more heat upwards.
Assertion and reason both are correct statements, and reason is the correct explanation for the assertion.
Assertion and reason both are correct statements, but reason is not the correct explanation for the assertion.
Assertion is correct, but reason is incorrect.
Assertion is incorrect, but reason is correct.
Correct Answer
Detailed Explanation
When we put a fire in a place, the air above the fire gets heated up. Hot air being light moves up. To fill up the gap cold air from the side of the fire rushes in. As the top of a fire is covered by hot air, it feels hotter over the top of the fire than at the same distance on the sides.
Found an issue with this question?
Related Questions
More from 2003
A thin circular ring M and radius ‘r’ is rotating about its axis with a constant angular velocity ω. Four objects each of mass m, are kept gently to t...
For which one of the following equations is \( \Delta H_{\text{reaction}} \) equal to \( \Delta H_f^\circ \) for the product:
Which one of the following is a free-radical substitution reaction :