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 of tropospheric wave . Reason : Communication in UHF/ VHF regions is limited to line of sight 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

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

(A) : Communication in UHF/VHF regions can be established by space wave or tropospheric wave (R) : Communication in UHF/VHF regions is limited to line of sight distance

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.

Assertion: Long 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.