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प्रश्न
Velocity of plane electromagnetic waves in vacuum equals ______.
विकल्प
speed of light in vacuum
speed of sound
speed of sonic boom
speed of subsonic rockets
MCQ
रिक्त स्थान भरें
उत्तर
Velocity of plane electromagnetic waves in vacuum equals speed of light in vacuum.
Explanation:
In fact, light (visible) is a part of em-spectrum. Hence its speed is equal to that of light and in vacuum it is given by `1/sqrt(mu_oepsilon_o)`.
shaalaa.com
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