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Home » Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:
Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:
CBSE | Class 12 | Communication Systems | NCERT Exemplar | Physics
Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:

(a) A is transmitted via space wave while B and C are transmitted via skywave

(b) A is transmitted via ground wave, B via skywave and C via space wave

(c) B and C are transmitted via ground wave while A is transmitted via skywave

(d) B is transmitted via ground wave while A and C are transmitted via space wave

Answer:

The correct option is (b) A is transmitted via ground wave, B via skywave and C via space wave

Explanation:

The range of frequencies is as follows:
Ground wave: 300Hzto300kHz (it may go upto 3 MHz)
skywave : 300kHzto3MHz
Space wave :3MHzto300GHz

i

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