A gas jar full of air was placed upside down on a gas jar full of bromine vapours, the red brown vapours of bromine moved from the lower jar to the upper jar conntaining air. in this experiment

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.