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Stopping potential, maximum kinetic energy or wavelength from Einstein's photoelectric equation

This type of question, asked 5 times: 2 May 2023 S2, 4 May 2023 S1, 11 May 2024 S2, 19 Apr 2025 S2, 16 Apr 2026 S1. All 5 questions below, oldest first.

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  1. Question 1

    2 May 2023 S2

    47
    The stopping potential for a photoelectric emission process is 10 V. The maximum kinetic energy of the electrons ejected in the process is [Charge on electron e=1.6×10−19 Ce = 1.6 \times 10^{-19}\,\text{C}]

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  2. Question 2

    4 May 2023 S1

    50
    For a photosensitive material, work function is W0W_0 and stopping potential is V. The wavelength of incident radiation is (h=h = Planck's constant, c=c = velocity of light, e=e = electronic charge)

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  3. Question 3

    11 May 2024 S2

    4
    A metal surface of work function 1.13 eV is irradiated with light of wavelength 310 nm. The retarding potential required to stop the escape of photoelectrons is. Take hce=1240×10−9\frac{hc}{e} = 1240 \times 10^{-9} SI units

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  4. Question 4

    19 Apr 2025 S2

    49
    The maximum velocity of the photoelectrons emitted by a metal surface is 9×105 m/s9\times10^{5}\,m/s. The value of ratio of charge (e) to mass (m) of the photoelectron is 1.8×1011 C/kg1.8\times10^{11}\,C/kg. The value of stopping potential in volt is

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  5. Question 5

    16 Apr 2026 S1

    144
    For a photosensitive material, work function is 'W0W_0' and stopping potential is 'V'. The wavelength of the incident radiation is (h=Planck's constant, c = velocity of light, e = electronic charge)

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