1.

Dimensions of in_(0)mu_(0) are :

Answer»

`[LT^(-1)]`
`[LT^(-2)]`
`[L^(2)T^(-2)]`
`[L^(-2)T^(2)]`

Solution :We know that speed of e.m. wave is `C=(1)/(sqrt(mu_(0)epsilon_(0)))`
`:. mu_(0)epsilon_(0)=(1)/(C^(2))=L^(-2)T^(2)`
Hence CORRECT CHOICE is `(d)`.


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