Point Out the Incorrect Statement with Respect to an Electromagnetic

question 28

Multiple Choice

Point out the incorrect statement with respect to an electromagnetic wave in vacuum (or air) .

• A)The color depends on the wavelength.
• B)The energy is transported with speed c in the direction of propagation.
• C)Both the electric field and the magnetic field exist in a plane perpendicular to the direction of propagation.
• D)The electric and the magnetic fields change in time,but do not change with position in space.
• E)The electric field vector and the magnetic field vector are always perpendicular to each other.