Explain why Ahmadabad and Kolkata are able to see the noon sun exactly overhead in a year but not Delhi.
1. These two cities lie within the Tropic of cancer.
2. The tropic of cancer is the circle of latitude on the earth that marks the apparent position of t he sun at the time of the northern solstice.
3. It is also the farthest north latitude at which the sun can be directly overhead.
4. So in Delhi the sun is never directly overhead.
