Why does the wave theory of light not explain the photoelectric effect?
(a) The wave nature of light fails to explain the photoelectric effect; this is because of the following reasons: When the waves of light of higher intensity fall on the metal surface, more energy will be imparted to the electrons. Hence, the kinetic energy of the emitted/ ejected electrons increases.
Does the photoelectric effect prove that light is a wave?
The photoelectric effect proves that energy is quantised. These lumps or packets of energy are called photons. This contradicts the long accepted wave model, where light is considered as an electromagnetic wave, with energy arriving continuously. The photon model was Einstein’s explanation of the photoelectric effect.
Which of the following does not support the wave nature of light?
The photoelectric effect can be explained using the particle nature of light. From these observations, we can say that the photoelectric effect does not support the wave nature of light. Thus, the correct option is (D).
Is electromagnetic wave theory of light could not explain black body radiation?
Electromagnetic wave theory of light could not explain Black Body radiations. Explanation: According to electromagnetic theory, the absorption and the emission should be continuous. As the wavelength keeps decreasing, the intensity of the emitted radiations should keep increasing to infinity.
How does light intensity affect the photoelectric effect?
In the photoelectric effect, light incident on the surface of a metal causes electrons to be ejected. The intensity affects the number of electrons, and the frequency affects the kinetic energy of the emitted electrons.
Can the wave theory explain the photoelectric effect?
However, the wave theory cannot explain photoelectric effect. The maximum kinetic energy of the released electrons does not vary with the intensity of light, as was expected with wave theory, but was instead found to increase with the frequency of light.
Is light particle or wave theory?
Photoelectric Effect and Wave Theory of Light It is generally argued that the photoelectric effect provides evidence for the particle nature of light as the photoelectrons are almost released instantaneously when the light hits the detector.
How does the photoelectric effect show light is a particle?
How does photoelectric effect show light is a particle? For the photon to eject an electron, there must be enough energy in a single photon. You can’t use lots and lots of lower energy photons. This proves that photons are discrete packets of energy.
How did Einstein explain the photoelectric effect?
He observed the photoelectric effect in which ultraviolet light forces a surface to release electrons when the light hits. Einstein explained the reaction by defining light as a stream of photons, or energy packets.