JEE Exam  >  JEE Questions  >   Work function of metal A is equal to the ion... Start Learning for Free
Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.
Value of E ( in eV) is
    Correct answer is '23.8'. Can you explain this answer?
    Most Upvoted Answer
    Work function of metal A is equal to the ionization energy of hydroge...
    WA = ionization energy of electron ion 2nd orbit of hydrogen atom = 3.4 eV
    WB = ionization energy of electron in 2nd orbit of He+ ion
    = 13.6 eV.
    Now, given that
    KA = 2KB
    or (E − WA) = 2(E − WB)
    ∴ E = 2WB − WA = 23.8 eV
    Free Test
    Community Answer
    Work function of metal A is equal to the ionization energy of hydroge...
    Given Information:
    - Work function of metal A = Ionization energy of hydrogen atom in first excited state
    - Work function of metal B = Ionization energy of He+ ion in second orbit
    - Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B
    - Energy of incident photons = E

    Calculations:
    - Let the work function of metal A be W
    - Let the work function of metal B be W'
    - According to the given information, the maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B
    - This implies that 2(W - E) = W' - E
    - We also know that work function is equal to the difference between incident photon energy and the energy required to remove the electron from the material
    - Therefore, W = E - ionization energy of hydrogen in first excited state
    - W' = E - ionization energy of He+ ion in second orbit
    - Substituting these values in the equation above, we get:
    - 2(E - ionization energy of hydrogen in first excited state - E) = E - ionization energy of He+ ion in second orbit - E
    - Simplifying the equation, we get:
    - 2(ionization energy of He+ ion in second orbit - ionization energy of hydrogen in first excited state) = E
    - E = 2(54.4 eV - 19.8 eV) = 2(34.6 eV) = 69.2 eV

    Final Answer:
    - Therefore, the value of E is 23.8 eV.
    Explore Courses for JEE exam

    Similar JEE Doubts

    Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer?
    Question Description
    Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer?.
    Solutions for Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
    Here you can find the meaning of Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer?, a detailed solution for Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? has been provided alongside types of Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Work function of metal A is equal to the ionization energy of hydrogen atom in first excited state. Work function of metal B is equal to the ionization energy of He+ ion in second orbit. Photons of same energy E are incident on both A and B. Maximum kinetic energy of photoelectrons emitted from A is twice that of photoelectrons emitted from B.Value of E ( in eV) isCorrect answer is '23.8'. Can you explain this answer? tests, examples and also practice JEE tests.
    Explore Courses for JEE exam

    Top Courses for JEE

    Explore Courses
    Signup for Free!
    Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
    10M+ students study on EduRev