engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electromagnetic Waves The Traveling Electromagnetic Wave
The electric field of an electromagnetic wave in free space is given by \(\vec{E}=10 \cos (10^7 t + kx)\hat{j}\) V/m, where t and x are in seconds and metres respectively. It can be inferred that
(a) The wavelength λ is 188.4 m
(b) The wave number k is 0.33 rad/m
(c) The wave amplitude is 10 V/m
(d) The wave is propagating along +x direction
Which one of the following pairs of statements is correct?
1
(c) & (d)
2
(a) and (b)
3
(b) & (c)
4
(a) & (c)