Respuesta :
When we increase the intensity of incident light, the number of electrons ejected from the metal surface has increased energy. Thus, correct option is D.
What is Emission Energy?
Electrons are emitted from the metal surface when it is exposed to light. This is called the photoelectric effect. Each metal has a certain threshold frequency of light at which an electron is emitted. Above this frequency, the electron is emitted and the extra energy is transferred to the electron.
On increasing the intensity of incident light, the kinetic energy of electrons increases several folds. This is because, energy of an electron is directly proportional to the intensity of incident light. Thus, D is the correct option.
Learn more about Photons here:
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Your question is incomplete, probably the complete question/missing part is:
You shoot a beam of 4. 5 ev light at a metal surface and notice that electrons are being released from the metal. What will happen if you then increase the intensity of the 4. 5 ev light?
A. The metal will bend and warp.
B. Nothing, the energy of the light is the same.
C. More electrons would be released.
D. Photons would come off at higher speeds.
