Calculate the wavelength of an ubraviolet wave , if its frequency is `12 xx 10^(16)` cycles per second and `c = 3 xx 10^(6) "in" s^(-1)`?

Explanation

Velocity of radition `= 3 xx 10^(8)m s^(-1)`
Frequency of radition `= 12 xx 10^(16) Hz`
Wavelength `(lambda) = (c )/(v) = (3 xx 10^(8))/(12 xx 10^(16)) = 0.25 xx 10^(8-) m`
` or lambda = 2.5 xx 10^(-8)m`