How does the photoelectric effect disagree with wave theory?

According to wave theory, after the light falls on a substance electrons are emitted after a small instant of time. However, in photoelectric effect, the electron emissions are immediate without a time delay.

Can photoelectric effect be explained by wave nature?

Photoelectric effect cannot be explained on the basis of wave nature because experimentally we know that we need a particular energy called the work function of the metal surface. Unless this energy is provided, the electron won’t be ejected, irrespective of the time for which light is incident.

Does photoelectric effect support particle nature or wave nature of light?

The photoelectric effect supports a particle theory of light in that it behaves like an elastic collision (one that conserves mechanical energy) between two particles, the photon of light and the electron of the metal.

Why the wave model for radiation Cannot account for the photoelectric effect?

The photoelectric effect cannot be explained by the wave model due to the following reasons: The energy of a wave increases with an increase in intensity. However, in the photoelectric effect, increase in intensity has no effect on the energy of electrons emitted.

Why photoelectric effect Cannot be explained by the classical physics?

The photoelectric effect has three important characteristics that cannot be explained by classical physics: (1) the absence of a lag time, (2) the independence of the kinetic energy of photoelectrons on the intensity of incident radiation, and (3) the presence of a cut-off frequency.

Why photoelectric effect Cannot be explained on the basis of wave nature of light Givereasons?

Give reasons. (b) Write the basis features of photon picture of electromagnetic radiation on which Einstein’s photoelectric equation is based. a) Wave theory of light cannot explain the photoelectric effect because of the following reasons: i) Wave nature does not explain the instantaneous ejection of photoelectrons.

How photoelectric effect explain particle nature of light?

Photoelectric Effect and the Particle Nature of Light. A key experiment that was explained by Einstein using light’s particle nature was called the photoelectric effect. The photoelectric effect is a phenomenon that occurs when light shined onto a metal surface causes the ejection of electrons from that metal.

How does the photoelectric effect show the particle nature of light?

The photoelectric effect proves that light has particle-like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.

How does photoelectric effect support quantum nature of light?

Photoelectric effect supports quantum nature of light because: The maximum kinetic energy of the photoelectrons depends only on the frequency of the light and not on its intensity. C. Even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.

How does wavelength affect photoelectric effect?

In the photoelectric effect light which strikes a metal causes electrons to be emitted. As the wavelength decreases for a specified metal, the speed (and thus the Kinetic Energy) of the emitted electrons increases.

What is photoelectric effect in physics?

photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.

Can the wave model explain the photoelectric effect?

The wave model cannot explain the Photoelectric effect. The explanation for this relies on the concept of the photon, a quantum packet of energy. So EM radiation is given by short bursts of energy.

What does the photoelectric effect provide evidence of?

The Photoelectric effect provides evidence that electromagnetic waves have particle-like behaviour. In the photoelectric effect, electrons are emitted from a metal’s surface when it absorbs electromagnetic radiation.

What is the relationship between light intensity and photoelectric effect?

The photoelectric current is directly proportional to the light intensity. The kinetic energy of the photoelectrons is directly proportional to the light frequency. The stopping potential is directly proportional to the frequency and the process is instantaneous. Factors affecting Photoelectric Effect

Why does the photoelectric effect not occur when red light strikes metal?

The photoelectric effect does not occur when the red light strikes the metallic surface because the frequency of red light is lower than the threshold frequency of the metal. The photoelectric effect occurs when green light strikes the metallic surface and photoelectrons are emitted.