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Wave Optics

Question
CBSEENPH12039542

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.

  •  Statement 1 is true, statement 2 is false. 

  • Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1

  •  Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1

  • Statement 1 is false, Statement 2 is true

Solution

D.

Statement 1 is false, Statement 2 is true