What is light intensity? Is it the number of photons in the light?
What determines light intensity? Is it the frequency of the light, energy of the photon?
and one more thing why UV light bounces off photo electron but not visible light and other light? Is it because UV light has much shorter wavelength than visible light so it has higher frequency which means higher photon energy because E=hf
so sufficient energy to remove an electron from metal? does radio waves gives photo electron too?
please help me I am getting really confused and I dont know where to start from.
thanx a lot!!!!