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प्रश्न
What does the ratio of electric-field amplitude to magnetic-field amplitude equal in free space?
विकल्प
\[\frac{E_0}{B_0}=c^2\]
\[\frac{E_0}{B_0}=0\]
\[\frac{E_0}{B_0}=c\]
\[\frac{E_0}{B_0}=\frac{1}{c}\]
MCQ
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उत्तर
The ratio of the electric and magnetic field amplitudes equals the wave velocity. In free space, this is \[\frac{E_0}{B_0}=c\].
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