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प्रश्न
Give reasons for the following
Vertical rays are hotter than slanting rays.
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उत्तर १
Vertical rays are hotter, because these cross shorter distance from the sun to the earth. Consequently the tropical belt is hotter than temperate and polar areas.
उत्तर २
Vertical rays remain focussed over a shorter area than slanting rays. During slanting rays solar radiation is spread over a larger area.
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