Geography
Give reasons for the following:
Mid-day Sun can be seen overhead in Chennai twice a year, but not even once in Delhi. Why?
Answer
Mid-day Sun can be seen overhead in Chennai twice a year, but not even once in Delhi because Delhi lies to the north of Tropic of Cancer which is the northern most limit of overhead Sun. Sun rays are never vertical beyond the tropics.
On the other hand, Chennai has overhead Sun when the Sun moves northwards from the equator and when the Sun moves southwards towards the equator, as it lies within the tropical region.
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