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Find the speed of light in air, if an el...

Find the speed of light in air, if an electromagnetic wave is travelling in air whose dielectric constant is `K=1006.`

A

`3xx10^(8)" "m//s`

B

`3.88xx10^(8)" "m//s`

C

`2.5xx10^(8)" "m//s`

D

`4.6xx10^(8)" "m//s`

Text Solution

Verified by Experts

(a) `v=(1)/(sqrt(mu_(0)kepsi_(0)))implies (c)/(sqrt(k))`
`v=(c)/(sqrt(k))=(3xx10^(8))/(sqrt(1.006))implies v~=3xx10^(8)m//s`
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