AIIMS 2005 Physics Sky-wave Propagation Assertion Reason Question
Assertion : Television signals are received through sky-wave propagation.
Reason : The ionosphere reflects electromagnetic waves of frequencies greater than a certain critical frequency.
Both assertion and reason are true and reason is the correct explanation of assertion
Both assertion and reason are true but reason is not the correct explanation of assertion
Assertion is true but reason is false
Both assertion and reason are false
Correct Answer
Detailed Explanation
In sky wave propagation, the radio waves having frequency range 2 MHz to 30 MHz are reflected back by the ionosphere.
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