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A Student Claims that Because of Atmospheric Refraction, the Sun Can Be Seen After It Has Set, and the Day Is, Therefore, Longer than If the Earth Had No Atmosphere. What Does the Student Mean by Saying that the Sun Can Be Seen After It Has Set? - CBSE Class 10 - Science

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Question

A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere. 

What does the student mean by saying that the sun can be seen after it has set?

Solution

 The refraction of sunlight by the earth's atmosphere causes the sun to be seen for about two minutes even after it has set below the horizon.

  Is there an error in this question or solution?

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Solution A Student Claims that Because of Atmospheric Refraction, the Sun Can Be Seen After It Has Set, and the Day Is, Therefore, Longer than If the Earth Had No Atmosphere. What Does the Student Mean by Saying that the Sun Can Be Seen After It Has Set? Concept: Atmospheric Refraction.
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