Dual Nature of Radiation and Matter

Bihar Board Class 12 · Physics · 25 past questions

1. Q1 2026 Set A

   How many joules of energy will be released due to mass defect of 1 mg ?

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2. Q2 2026 Set A

   The ratio of de Broglie wavelength associated with two electrons accelerated through 49 V and 64 V is

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3. Q3 2026 Set A

   The maximum kinetic energy of the photoelectrons varies

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4. Q4 2026 Set A

   The momentum ($p$) of photon is

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5. Q5 2026 Set A

   The maximum velocity of an electron emitted from a metal surface becomes two times when the frequency $\nu$…

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6. Q6 2026 Set A2024 Set A

   Cathode rays are group of

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7. Q7 2025 Set D

   In the phenomenon of photoelectric emission, on increasing the intensity of incident light, the photoelectric…

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8. Q8 2025 Set D

   The wavelength of de Broglie wave associated with any moving particle does not depend on

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9. Q9 2025 Set D

   The formula of kinetic mass of photon is

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10. Q10 2025 Set D

    What is the energy of a photon with a wavelength of 500 nm? (Use $c = 3 \times 10^8\ m/s$ and…

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11. Q11 2025 Set D

    Which of the following is chargeless particle?

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12. Q12 2025 Set D

    X-rays are

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13. Q13 2024 Set A

    de Broglie wavelength is

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14. Q14 2024 Set A

    Photocell is based on

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15. Q15 2023 Set F

    In photoelectric effect, the photoelectric current is independent of

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16. Q16 2023 Set F

    For same wavelength of electron and photon, which physical quantity will be same?

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17. Q17 2022 Set I

    Energy of photon is equal to

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18. Q18 2022 Set I

    Which of the following is correct for charge on an electron ?

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19. Q19 2022 Set I

    Which of the following is the work-function of sodium ?

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20. Q20 2021 Set A

    The rest mass of photon is

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21. Q21 2019

    The energy of a photon of wavelength $\lambda$ is

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22. Q22 2018

    A particle of mass m and charge q is accelerated through a potential V. The De-Broglie wave length of the…

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23. Q23 2018

    The number of Photons of frequency $10^{14}$Hz in radiation of 6.62 will be…

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24. Q24 2017

    The energy of emitted photo electron depends up on-

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25. Q25 2017

    A light of wavelength $6000A^0$ is incident on a metal of work function 2 eV. Will electrons be emitted? If…

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