Class 12 NEET Physics Electromagnetic Waves Questions

The electric field of an electromagnetic wave in free space is given by

→

E

=10cos(107t+kx)

∧

j

V/m where t and x are in seconds and metres respectively. It can be inferred that
(1) the wavelength X is 188.4 m.
(2) the wave number k is 0.33 rad/m.
(3) the wave amplitude is 10 V/m.
(4) the wave is propagating along +x direction.
Which one of the following pairs of statements is correct?