Physics · 2013
JEE Main · 23 April 2013, Shift 1 · Q5
\section*{Which of the following statement is NOT correct ?}
Official answer
(3)
Elecromagnetic waves of frequencies higher than about $\displaystyle 30$ MHz cannot penetrate the ionosphere.
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.