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Question

During sunrise or sunset, the sun appears bigger because the rays of light coming from it pass through :


A

larger length of atmosphere

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B

smaller length of atmosphere

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C

the earth gets closer to sun

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D

none of these

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Solution

The correct option is A

larger length of atmosphere


The explanation for the correct option:

Option A is correct

  • The Atmospheric refraction is the main cause of the Sun being seen while it is still below the horizon.
  • The light which is from the lower side (edge) of the Sun disk is must be refracted more than from its upper edge.

The explanation for the incorrect option:

Option B is correct

  • The length of the atmosphere of the Earth is not smaller.
  • Earth's atmosphere has five major and several secondary layers. (troposphere, stratosphere, mesosphere, thermosphere, and exosphere.)

Option C is correct

  • The distance between them does not change. Because the earth is revolving in a particular path that is not changed.
  • So, the distance between the Earth and the Sun does not change.

Option D is correct

Because option A is correct.


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