Question

If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to _____ ?
A) 300 m
B) 30 m
C) 3 m
D) 0.3 m

Answer 1

If a carrier wave of 1000 kHz is used to carry the signal, the length of ... A) 300 m, B) 30 m. C) 3 m, D) 0.3 m ... 3 × 108/106 = 300 m.

Answer 2

Correct answer to the question is option (A) 300 m

Explanation:

Given that the frequency of the carrier wave is f = 1000 kHz = 1000 * 10^3 Hz

Length of the transmitter antenna is decided  by the wavelength of the signal.

We know that,

Wavelength λ = Speed of light (c) / Frequency of wave (f)

Speed of light =  3 * 10^8 m/s

= 3 * 10^8 / 1000*10^3

= 300 m

So, length of antenna = 300 m.