Long Answer TypeCalculate the frequency and wavelength of light of wavelength:
(i) 5000 A  (ii) 4.4 mμ    (iii) 580 mm
Short Answer TypeA certain radiostation broadcasts on a frequency of 920 k Hz. What is the wavelength of electromagnetic radiation broadcast by the radio station?
The frequency of D-line in the spectrum of sodium is 5.09 x 1014s-1. Calculate the wavelength of light.
Frequency of radiation
               = 5.09 x 1014 s-1
Velocity of light  = 3 x 108 ms-1
We know, Â Â Â 
             
or             
The wavelength range of the visible spectrum extends from violet (400 nm) to red (750 nm). Express these wavelengths in frequencies (Hz). [1 nm = 10-9 m]
Calculate the wavelength, frequency and wave number of light wave whose period is 2.0 x 10-10 s
Yellow light emitted from a sodium lamp has a wave length (λ) of 580 nm (or 5800Ã…). Calculate the frequency (v) and wave number ⊽ of the yellow light.Â
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