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Calculate the wavelength , frequency an...

Calculate the wavelength , frequency and wave number of a light wave whose time period is `3 xx 10^(-10)s`.

Text Solution

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Time period `(T ) = 3 xx 10^(-10)s`
Frequency `(v) = ( 1)/(T) = (1)/(3 xx 10^(-10)s) = 3.33xx10^(9) s^(-1)`
` v= 3.3 xx 10^(9) s^(-1)`
Wavelength `( lambda) = (c )/( v) = ( 3 xx 10^(8)ms^(-1))/(3.3xx10^(9) s^(-1))`
`= lambda= 9 xx 10^(-2) m`
Wave number `( bar(v)) = (1)/(lambda)`
`bar(v) = (1)/( 9xx10^(-2)m)`
`bar(v) = 11.11m^(-1)`
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