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Q.

The electromagnetic waves travel with a velocity in vacuum

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a

equal to velocity of sound

b

none of these

c

less than velocity of light

d

equal to velocity of light

answer is B.

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Detailed Solution

Velocity of EM waves

$= \frac{1}{\sqrt{μ_{0} ε_{0}}} = 3 \times 10^{8} m / s = velocity of light$

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