Which of the following spectrum have all the frequencies from high to low frequency range

Which of the following is related to the high frequency of Down syndrome ?

Which of the following is useful to find from the cumulative frequencies in a grouped frequency table?

Audio frequency range is from

Audio frequency range is from

Modulation is the phenomenon of superimposing the low audio frequency base band message or information signals ( called the modulation signals) on a high frequency wave (called, the carrier wave). The resultant wave is called the modulated wave, which is transmitted. Read the above passage and answer the following questions: (i) What are the Audio Frequency and Radio Frequency ranges? (ii) Why audio frequency signals, as such cannot be transmitted over long distance? (iii) What does the phenomemom imply in day to day life ?

Which of the following is the range of frequency used in optical communication?

Which transition in hydrogen spectrum the maxima frequency