Consider the following properties of electromagnetic waves:
1. These waves do not require any material medium to propagate
2. Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of waves
3. The energy in electromagnetic wave is divided equally between electric and magnetic vectors
4. Both electric and magnetic field vectors attain the maxima and minima at the same place and same time
Which of the above properties of electromagnetic waves are correct?
1
1, 2 and 3 only
2
1, 3 and 4 only
3
2, 3 and 4 only
4
1, 2, 3 and 4