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General

Easy

Question

# Due to a vertical temperature gradient in the atmosphere, the index of refraction varies. Suppose index of refraction varies as , where n_{0} is the index of refraction at the surface and . A person of height h = 2.0 m stands on a level surface. Beyond what distance will he not see the runway?

- 2000 m
- 3000 m
- 2500 m
- 3500 m

## The correct answer is: 2000 m

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