The vector $\vec E$ and $\vec B$ of an electromagnetic wave in vacuum are
The vector $\vec E$ and $\vec B$ of an electromagnetic wave in vacuum are
- A
along the same direction but of phase by $90^o$
- B
along the same direction and in phase
- C
perpendicular to each other and in phase
- D
perpendicular to each other and out of phase by $90^o$
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Light is an electromagnetic wave. Its speed in vacuum is given by the expression
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- [AIIMS 2002]
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