AAI ATC Junior Executive 2016 Shift 1 Paper

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Question : 76 of 120

Marks: +1, -0

A plane-polarized electromagnetic wave is travelling in free space along + x-direction. The amplitude of its electric field is E_o = 240 N/C and its frequency is 150 MHz. The electric field of the wave can be written as:

E = {(240 N/C) sin [(2.09 rad/m) x + (6.27 × 10⁸ rad/s) t]} j
E = {(240 N/C) sin [(3.14 rad/m) x – (9.42 × 10⁸ rad/s) t]} j
E = {(240 N/C) sin [(2.09 rad/m) x - (6.27 × 10⁸ rad/s) t]} j
E = {(240 N/C) sin [(3.14 rad/m) x + (9.42 × 10⁸ rad/s) t]} j

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