/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 26 The AM range of radio waves have... [FREE SOLUTION] | 91影视

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Chapter 17: Problem 26

The AM range of radio waves have frequency (A) Less than \(30 \mathrm{MHz}\) (B) More than \(30 \mathrm{MHz}\) (C) Less than \(20000 \mathrm{~Hz}\) (D) More than \(20000 \mathrm{~Hz}\)

Short Answer

Expert verified
The AM radio frequency range is Less than \(30 \mathrm{ MHz}\) and More than \(20,000 \mathrm{~Hz}\). Therefore, options (A) and (D) are correct.

Step by step solution

01

Recall the frequency range of AM radio waves

AM radio waves, or Amplitude Modulated radio waves, have a frequency range between approximately \(535 \mathrm{ kHz}\) and \(1705 \mathrm{ kHz}\).
02

Compare the given options with the AM radio frequency range

(A) Less than \(30 \mathrm{ MHz}\) means frequencies below \(30,000 \mathrm{ kHz}\). Since AM radio waves fall between \(535 \mathrm{ kHz}\) and \(1705 \mathrm{ kHz}\), they are indeed below \(30,000 \mathrm{ kHz}\). So, option (A) is correct. We can still check the other options. (B) More than \(30 \mathrm{ MHz}\) means frequencies above \(30,000 \mathrm{ kHz}\). AM radio waves are not in this range, as they are between \(535 \mathrm{ kHz}\) and \(1705 \mathrm{ kHz}\). So, option (B) is incorrect. (C) Less than \(20,000 \mathrm{ Hz}\) means frequencies below \(20 \mathrm{ kHz}\). AM radio waves are not in this range, as they are between \(535 \mathrm{ kHz}\) and \(1705 \mathrm{ kHz}\), which is higher than \(20 \mathrm{ kHz}\). So, option (C) is incorrect. (D) More than \(20,000 \mathrm{ Hz}\) means frequencies above \(20 \mathrm{ kHz}\). AM radio waves are indeed above \(20 \mathrm{ kHz}\) as they are in the range of \(535 \mathrm{ kHz}\) to \(1705 \mathrm{ kHz}\). So, option (D) is correct. In conclusion, options (A) and (D) are correct, so the AM radio frequency range is Less than \(30 \mathrm{ MHz}\) and More than \(20,000 \mathrm{~Hz}\).

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Most popular questions from this chapter

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