1.

Velocity of electromagnetic wave having wavelength 5000 Å in medium of refractive index 2 is .....

Answer»

`2XX10^(8)`
`1.5xx10^(8)`
`3XX10^(8)`
`1.5xx10^(9)`

Solution :`N=(c)/(V)`
`:.v=(c)/(v)=(3xx10^(8))/(2)=1.5xx10^(8)m//s`


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