NEET 2010 Physics question

Which of the following statement is false for the properties of electromagnetic waves?

(1)Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
(2)The energy in electromagnetic wave is divided equally between electric and magnetic vectors.
(3)Both electric and magnetic field vectors are parallel to each other perpendicular to the direction of propagation of wave.Correct
(4)These waves do not require any material medium for propagation.

Answer: (3)

Solution

In an electromagnetic wave and are in phase, so they reach maxima and minima together at the same place and time: (1) is true. The electric and magnetic energy densities are equal (), so the energy is divided equally: (2) is

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Question ID VK-090483