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The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]
- a)none
- b)A only
- c)A and B only
- d)all three metals
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 ...
So, only metals having work function less
than 3eV can emit photoelectrons for the
incident radiation of wavelength 4100Å.
than 3eV can emit photoelectrons for the
incident radiation of wavelength 4100Å.
Most Upvoted Answer
The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 ...
Nm (corresponding to an energy of 3.02 eV) are A and B.
Einstein's equation states that the energy (E) of a photon is equal to Planck's constant (h) multiplied by the frequency (ν) of the radiation: E = hν. This equation can also be written in terms of the wavelength (λ) of the radiation: E = hc/λ, where c is the speed of light.
To determine which metals will emit photoelectrons for a radiation of wavelength 4100 nm (corresponding to an energy of 3.02 eV), we need to compare the energy of the radiation to the work function of each metal. If the energy of the radiation is greater than or equal to the work function of the metal, photoelectrons will be emitted.
For metal A, the energy required to remove an electron (i.e. the work function) is 1.92 eV. The energy of the radiation is 3.02 eV, which is greater than the work function of metal A. Therefore, metal A will emit photoelectrons.
For metal B, the work function is 2.0 eV. The energy of the radiation is also greater than the work function of metal B, so it will emit photoelectrons.
For metal C, the work function is 5 eV. The energy of the radiation is less than the work function of metal C, so it will not emit photoelectrons.
Therefore, the metals that will emit photoelectrons for a radiation of wavelength 4100 nm are A and B.
Einstein's equation states that the energy (E) of a photon is equal to Planck's constant (h) multiplied by the frequency (ν) of the radiation: E = hν. This equation can also be written in terms of the wavelength (λ) of the radiation: E = hc/λ, where c is the speed of light.
To determine which metals will emit photoelectrons for a radiation of wavelength 4100 nm (corresponding to an energy of 3.02 eV), we need to compare the energy of the radiation to the work function of each metal. If the energy of the radiation is greater than or equal to the work function of the metal, photoelectrons will be emitted.
For metal A, the energy required to remove an electron (i.e. the work function) is 1.92 eV. The energy of the radiation is 3.02 eV, which is greater than the work function of metal A. Therefore, metal A will emit photoelectrons.
For metal B, the work function is 2.0 eV. The energy of the radiation is also greater than the work function of metal B, so it will emit photoelectrons.
For metal C, the work function is 5 eV. The energy of the radiation is less than the work function of metal C, so it will not emit photoelectrons.
Therefore, the metals that will emit photoelectrons for a radiation of wavelength 4100 nm are A and B.
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The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer?.
The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer?.
Solutions for The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The work functions for metals A, B and C arerespectively 1.92 eV, 2.0 eV and 5 eV.According to Einstein s equation, the metalswhich will emit photoelectrons for a radiationof wavelength 4100 Å is/are [2005]a)noneb)A onlyc)A and B onlyd)all three metalsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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