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Q40 (NDA-I/2016) Geography › World Physical Geography › Earth rotation and time Answer Verified

Which of the following statements in the context of northern hemisphere is/are correct ? 1. Vernal equinox occurs on March 2 1. 2. Summer solstice occurs on December 2 2. 3. Autumnal ' equinox occurs on September 2 3. 4. Winter solstice occurs on June 2 1. Select the correct answer using the code given below :

Result
Your answer: —  Â·  Correct: B
Explanation

The correct answer is Option 2 (1 and 3 only). In the Northern Hemisphere, these astronomical events are defined by the Earth's axial tilt and its orbit around the Sun.

  • Statement 1 is correct: The Vernal (Spring) Equinox occurs around March 21. During this time, the Sun is directly overhead at the equator, resulting in nearly equal day and night globally.
  • Statement 3 is correct: The Autumnal Equinox occurs around September 23. Similar to the Vernal Equinox, the Sun crosses the celestial equator moving southward, marking the beginning of autumn in the Northern Hemisphere.
  • Statement 2 is incorrect: The Summer Solstice in the Northern Hemisphere occurs on June 21, when the North Pole is tilted closest to the Sun.
  • Statement 4 is incorrect: The Winter Solstice occurs on December 22, when the Northern Hemisphere experiences its shortest day.

Since statements 1 and 3 represent the correct seasonal transitions for the Northern Hemisphere, Option 2 is the right choice.

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