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Assertion : Communication in UHF/VHF reg...

Assertion : Communication in UHF/VHF regions can be established by space wave or tropospheric wave.
Reason: Communication in UHF/VHF regions tosva is limited to line of sight distance

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The correct Answer is:
B
As UHF/VHF waves are not reflected by ionosphere being of higher frequency.
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Assertion : communication in UHF/ VHF regions can be established by space wave of tropospheric wave . Reason : Communiacation in UHF/ VHF regions is limited to line of singht distance.

Assertion : Communication in UHF/ VHF regions can be established by space wave or tropospheric wave. Reason : Communication is UHF/VHF regions in not limited to line of sight distance but can be achieved for very large distances

Statement-1: Communication in UHF/VHF regions can be established by space wave or tropospheric wave. Statement-2 : The refractive index of the ionosphere becomes very high for frequencies higher than the critical frequency.

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Assertion: Lond distance communication between two points on the earth is achieved using sky waves. Reason: sky wave propagation takes place above. The frequency of 30 MHz.

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Assertion : Electromagentic waves with frequencies more than the cirtical frequency of ionosphere cannot be used for communication using sky wave propagation. Reason : The refractive index of the ionosphere becomes very high for frequencies higher than the critical frequency .

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