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Class 12 NEET Physics Electromagnetic Waves Questions

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Question : 31

Total: 50

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

=10cos(107t+kx)

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?

(2010 Mains)

(3) and (4)
(1) and (2)
(2) and (3)
(1) and (3)

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