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According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.
If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.
Q. Photoelectric effect supports quantum nature of light because
(i) there is a minimum frequency of light below which no photoelectrons are emitted.
(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.
(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.
(iv) electric charge of the photoelectrons is quantized.
- a)i, ii, iii
- b)ii, iii
- c)iii, iv
- d)i, iv, iii
Correct answer is option 'A'. Can you explain this answer?
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According to wave theory of light, the light of any frequency can emi...
Options A,B and C are all supporters of quantum theory. This experiment paved the way for physicists to think about a theory different from the wave theory of light.
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According to wave theory of light, the light of any frequency can emi...
Explanation:
Photoelectric effect supports quantum nature of light because:
1. There is a minimum frequency of light below which no photoelectrons are emitted:
- According to the wave theory of light, the intensity of light should be sufficient to provide the necessary energy for emission of electrons. However, experimental observations show that light of frequency less than the threshold frequency cannot emit electrons, regardless of intensity. This indicates that light behaves in a quantized manner, supporting the quantum nature of light.
2. The maximum K.E. of photoelectrons depends only on the frequency of light and not on its intensity:
- Einstein's explanation of the photoelectric effect proposed that electromagnetic radiation is quantized. The stopping potential for photoelectrons ejected from a surface when light of a specific wavelength is incident on it is independent of the intensity of light. This implies that the energy of the photoelectrons depends solely on the frequency of light, supporting the quantized nature of light.
3. Even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately:
- The photoelectric effect demonstrates that photoelectrons are emitted from a metal surface instantaneously when exposed to light, even if the light is faint. This immediate emission of electrons further supports the idea that light interacts with matter in a quantized manner.
Therefore, the photoelectric effect provides strong evidence for the quantum nature of light by showing that certain phenomena, such as the emission of electrons from a surface, cannot be explained solely by classical wave theory and require a quantum mechanical explanation.
Photoelectric effect supports quantum nature of light because:
1. There is a minimum frequency of light below which no photoelectrons are emitted:
- According to the wave theory of light, the intensity of light should be sufficient to provide the necessary energy for emission of electrons. However, experimental observations show that light of frequency less than the threshold frequency cannot emit electrons, regardless of intensity. This indicates that light behaves in a quantized manner, supporting the quantum nature of light.
2. The maximum K.E. of photoelectrons depends only on the frequency of light and not on its intensity:
- Einstein's explanation of the photoelectric effect proposed that electromagnetic radiation is quantized. The stopping potential for photoelectrons ejected from a surface when light of a specific wavelength is incident on it is independent of the intensity of light. This implies that the energy of the photoelectrons depends solely on the frequency of light, supporting the quantized nature of light.
3. Even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately:
- The photoelectric effect demonstrates that photoelectrons are emitted from a metal surface instantaneously when exposed to light, even if the light is faint. This immediate emission of electrons further supports the idea that light interacts with matter in a quantized manner.
Therefore, the photoelectric effect provides strong evidence for the quantum nature of light by showing that certain phenomena, such as the emission of electrons from a surface, cannot be explained solely by classical wave theory and require a quantum mechanical explanation.
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According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer?
Question Description
According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer?.
According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer?.
Solutions for According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Here you can find the meaning of According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.a)i, ii, iiib)ii, iiic)iii, ivd)i, iv, iiiCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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