Which of the following statements about electromagnetic waves in free space are true?

A. The higher-frequency travel faster than the lower-frequency waves.
B. The higher-frequency waves have shorter wavelengths than the lower-frequency waves.
C. The wavelengths of the visible waves are some of the longest electromagnetic waves.
D. The wavelengths of the visible waves are some of the shortest electromagnetic waves.
E. The electric field vector is always at right angles to the magnetic field vector.


Answer:
B. The higher-frequency waves have shorter wavelengths than the lower-frequency waves.
E. The electric field vector is always at right angles to the magnetic field vector.

Physics & Space Science

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