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The electric field on an electromagnetic...

The electric field on an electromagnetic wave in free space is given by
`E=10 cos (10^7t+kx) hatj V//m`,
Where t and x are in seconds and metres respectively. It can be inferred that
(1) the wavelength `lambda` is `188.4m`.
(2) the wave number k is `0.33rad//m`
(3) the wave amplitude is `10V//m`
(4) the wave is propagating along +x direction.
which one of the following pairs of statement is correct?

A

(a) and (b)

B

(b) and (c )

C

(a) and (c )

D

(c ) and (d)

Text Solution

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The correct Answer is:
C
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