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## Main Question or Discussion Point

By De-Broglie,light also exibits matter property. According to him, wavelength=planck's constant/ momentum. And again momentum is the product of mass and velocity. We again know that, mass of light i.e. photon is zero. Then from De-Broglie's equation, is the wavelength of light infinity?

If so,from wave property of light,wavelength of light is finite. Is such contradiction allowed?

If so,from wave property of light,wavelength of light is finite. Is such contradiction allowed?