Question

what does this line mean-the mid day sun is overhead on all latitudes of this region at least once year.

Answer 1

Dear student,

a. This line implies that during the middle of the day /noon, the sun is right overhead once in an year., on all latitudes that fall between tropic of cancer and tropic of Capricorn.
b. Thus this region receives maximum amount of sunlight.
c. It is the Torrid zone and as we move away from tropic of cancer and Capricorn, the sun rays goes on slanting, they are never overhead.