Kinetic energy with which the electrons are emitted from the metal surface due to Photoelectric effect is
1) independent of the intensity of illumination
2) independent of the frequency of light
3) inversely proportional to the intensity of illumination
4) directly proportional to the intensity of illumination
Kinetic energy with which the electrons are emitted from the metal surface due to Photoelectric effect is
1) independent of the intensity of illumination
2) independent of the frequency of light
3) inversely proportional to the intensity of illumination
4) directly proportional to the intensity of illumination
here....
You don't need to get confused between intensity of light & Kinetic energy of Electrons.
Let me tell you Intensity of light means the number of photons. So even if we increase the intensity then there will be more number of photons participating in Photoelectric effect.
And however the Kinetic energy of Electrons doesn't depends on Intensity whereas it depends on frequency of photons,once the threshold or cut-off frequency is crossed electron jumps out of metal with certain Kinetic energy. Higher the frequency of photons higher is the Kinetic Energy.
Hence Kinetic Energy of Electrons is independent of Intensity of Light in Photoelectric effect!
Greater intensity just means more photons with the same energy each, and it only takes one photon to knock out an electron. You only get more energetic electrons by increasing the frequency of the light.
here....
You don't need to get confused between intensity of light & Kinetic energy of Electrons.
Let me tell you Intensity of light means the number of photons. So even if we increase the intensity then there will be more number of photons participating in Photoelectric effect.
And however the Kinetic energy of Electrons doesn't depends on Intensity whereas it depends on frequency of photons,once the threshold or cut-off frequency is crossed electron jumps out of metal with certain Kinetic energy. Higher the frequency of photons higher is the Kinetic Energy.
Hence Kinetic Energy of Electrons is independent of Intensity of Light in Photoelectric effect!
Greater intensity just means more photons with the same energy each, and it only takes one photon to knock out an electron. You only get more energetic electrons by increasing the frequency of the light.
