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NDA 2 2025 GAT, question 120

Topic: Geography

Q120

Which of the following are the factors that cause variation in the amount of insolation on the Earth ?

  1. Rotation of the earth on its axis

  2. Length of the day

  3. Distribution of land and water on the earth

Select the answer using the code given below :

  1. (a) 1 only
  2. (b) 1 and 2 onlyCorrect answer
  3. (c) 2 and 3 only
  4. (d) 1, 2 and 3

Solution.

Answer: (b) 1 and 2 only

  1. Rotation produces the daily cycle of solar exposure, and day length changes its duration.
  2. Land–water distribution mainly explains differences in heating, heat storage and temperature, rather than being a direct geometrical control on incoming solar radiation.
  3. The listed direct controls are 1 and 2.