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The electromagnetic waves travel with...

The electromagnetic waves travel with

A

a)the same speed in all media

B

b)the speed of sound in free space

C

c)the speed of light `c= 3 xx 10^(8) "ms"^(-1)` in solid medium

D

d)the speed of light `c = 3 xx 10^(8) "ms"^(-1)` in free space

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The correct Answer is:
D
The electromagnetic wave travel with the speed of light `c = 3 xx 10^(8) "ms"^(-1)` in free space.
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