What is Spectrum? , Radio waves and its uses in communication and broadcasting
Q. Consider the following statements regarding Spectrum
1. Spectrum is a frequencies band of electromagnetic waves or radio waves.
2. Radio waves are used for communication and broadcasting.
3. They are harmful in the environment.
4. Two operators can use the same frequency in the same region without interference.
5. FM radio uses 88 to 108 Mhz while Mobile services uses 900-1800 MHz and so on.
Which of the above statements are not true?- Published on 30 Mar 15a. 3,4
b. 3,4,5
c. 1,4,5
d. 1,2,5
ANSWER: 3,4
Spectrum are not harmful in the enviornment. Two operators cannot use the same frequency in the same region, else interference. Therefore, Government allocates spectrum among the service providers through auction.'
