Choose the incorrect statement. 1. The velocity of light in a vacuum is larger than the velocity of light in glass. 2. The velocity of light in a vacuum does not depend on the wavelength of light. 3. The velocity of light in a vacuum is the same as the velocity of x-ray in a vacuum. 4. The velocity of light is constant irrespective of the medium through which it is traveling. 5. The velocity of light is independent of the velocity of the observer and the source.