The circumference of the earth was first calculated by
| A. | Galileo |
| B. | Aryabhatta |
| C. | Eratosthenes |
| D. | Wegener |
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Option: C Explanation : Click on Discuss to view users comments. |
Which is the main proof for curvature of earth?
| A. | Disappearance of a ship slowly from the bottom to top and its appearance from top to bottom when it goes away from and comes to an observer |
| B. | Evidences of circum -navigation of earth |
| C. | Evidences of day and night |
| D. | Transcontinental air flights |
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Option: C Explanation : Click on Discuss to view users comments. |
Which of the following is correct?
| A. | At summer solstice the sun shines vertically over the Tropic of Capricorn. |
| B. | The sun shines vertically over the Equator once in a year. |
| C. | At the North Pole there is darkness for half the year. |
| D. | None of these. |
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Option: C Explanation : Click on Discuss to view users comments. |
Choose the incorrect statement:
| A. | All meridians are of the same length |
| B. | The axis of the earth is inclined at an angle of 66.5° to the horizontal |
| C. | The Sun's rays are vertical at all places on the days of the equinoxes |
| D. | The summer solstice for the Southern Hemisphere is in December |
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Option: C Explanation : Click on Discuss to view users comments. |
