MCQ
This question has Statement $-1$ and Statement $-2$ . Of the four choices given after the statements, choose the one that best describes the two statements

Statement $-1$ : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals

Statement $-2$ : The state of ionosphere varies from hour to hour, day to day and season to season

  • A
    Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is not the correct explanation of Statement $-1$
  • B
    Statement $-1$ is false, Statement $-2$ is true
  • C
    Statement $-1$ is true, Statement $-2$ is false
  • Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is the correct explanation of statement $-1$

Answer

Correct option: D.
Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is the correct explanation of statement $-1$
d
for long distance communication, sky wave signals are used

Also, the state of ionosphere varius every time so both satatement are correct

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