CBSE Class 12 Physics 2017 Delhi Set 1 Paper

© examsnet.com
Question : 5
Total: 26
How is the speed of em-waves in vacuum determined by the electric and magnetic fields?
Solution:  
Speed of em-waves is determined by the ratio of the peak values of electric and magnetic field vectors.
[Alternatively, Give full credit, if student writes directly C=
E0
B0
]
© examsnet.com
Go to Question: