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- 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: &
- #Joint Entrance Examination Main
- #National Eligilibility Cum Entrance Test
- #Engineering
- #Electromagnetic Waves
- #Physics
- #Class 12
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: Short wave transmission is achieved due to the total internal reflection of the em wave from an appropriate height in the ionosphere.
Statement 2: Refractive index of plasma is independent of the frequency of em waves.
Statement 1 is true, Statement 2 is false
Statement 1 is false, Statement 2 is true
Statement 1 is true, Statement 2 is true but Statement 2 is not the correct statement of Statement 1.
Sattement 1 is true, Statement 2 is true and Statement 2 is the correct explanation of Statement 1.
Answers (1)
Statement 1 is true because
Short wave transmission is achieved due to the total internal reflection of the em wave from an appropriate height in the ionosphere.
While statement 2 is false because
The effective refractive index of the ionosphere is given as
where f is the frequency of em waves
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