Search any question & find its solution
Question:
Answered & Verified by Expert
Assertion (A) Television signals are received through sky-wave propagation.Reason (R) The ionosphere reflects electromagnetic waves of frequencies in the range ( 3- 30) $\mathrm{MHz}$.
Choose the correct option.
Options:
Choose the correct option.
Solution:
2438 Upvotes
Verified Answer
The correct answer is:
$A$ is false but $R$ is true.
Television signals lies in region of $40 \mathrm{MHz}$ to $900 \mathrm{MHz}$, so these are not reflected by ionosphere and can be communicated by using a satellite only. It is because, ionosphere reflects electromagnetic wave of frequencies in the range of $3 \mathrm{MHz}$ to $30 \mathrm{MHz}$. Hence, Assertion is false but Reason is true.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.