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Question: Answered & Verified by Expert
The refractive index of ionosphere is
PhysicsCommunication SystemAP EAMCETAP EAMCET 2023 (17 May Shift 2)
Options:
  • A zero
  • B more than one
  • C less than one
  • D 1 (one)
Solution:
2971 Upvotes Verified Answer
The correct answer is: less than one
Ionospere is the topmost layer of earth atmosphere whose density is much smaller than the density of lower layers of earth's atomosphere. Therefore, refractive index ionospher is less than one.

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