CBSE Class 12-science Answered
(a) An em wave is travelling in a medium with a velocity 
. Draw a sketch showing the propagation of the em wave, indicating the direction of the oscillating electric and magnetic fields.
(b) How are the magnitudes of the electric and magnetic fields related to the velocity of the em wave?
. Draw a sketch showing the propagation of the em wave, indicating the direction of the oscillating electric and magnetic fields.
(b) How are the magnitudes of the electric and magnetic fields related to the velocity of the em wave?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(a)Magnetic field will be along Z- axis and electric field along Y- axis.
The sketch of the em wave indicating the direction of electric and magnetic field will be:
(b) E=c x B
where E is magnitude of electric field and B is magnitude of magnetic field, c= speed of light.
Answered by | 04 Jun, 2014, 03:23: PM
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