AIIMS 2018 Physics Convection Assertion Reason Question

Option C is correct because the assertion that it is hotter over the top of a fire than at the same distance on the sides is true, as hot air rises due to convection, creating a temperature gradient. However, the reason provided is false; while air does conduct heat, it is primarily the process of convection that causes the upward movement of hot air, not conduction.

Option A is incorrect because the reason does not correctly explain the assertion. Option B is also incorrect as it suggests both statements are true but fails to recognize the reason's inaccuracy. Option D is incorrect since the assertion is indeed true.