Dual Nature of Radiation and Matter

CBSE Class 12 · Physics · 33 past questions

18 of 33 · show all

1. Q1 2026

   Radiation of wavelength 200 nm is incident on a photosensitive surface of work function 4·2 eV. The kinetic…

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2. Q3 2026

   Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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3. Q5 2026

   For question number 13 to 16, two statements are given – one labelled as Assertion (A) and the other labelled…

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4. Q6 2026

   In a photoelectric experiment, the emitter plate is irradiated with radiation of 200 nm. The photocurrent…

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5. Q8 2026

   The maximum kinetic energy of the electrons emitted from a photo sensitive surface depends on

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6. Q9 2026

   Note : For question numbers 13 to 16, two statements are given – one labelled as Assertion (A) and the other…

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7. Q11 2025

   Choose the correct statement…

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8. Q16 2025

   The stopping potential $V_0$ measured in a photoelectric experiment for a metal surface is plotted against…

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9. Q17 2025

   Let $\lambda_e$, $\lambda_p$ and $\lambda_d$ be the wavelengths associated with an electron, a proton and a…

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10. Q18 2024

    Which one of the following is the correct graph between the maximum kinetic energy ($K_m$) of the emitted… (with a figure)

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11. Q19 2024

    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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12. Q22 2024

    The waves associated with a moving electron and a moving proton have the same wavelength $\lambda$. It…

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13. Q23 2024

    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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14. Q25 2024

    The work function for a photosensitive surface is 3·315 eV. The cut-off wavelength for photoemission of…

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15. Q26 2024

    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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16. Q28 2023

    Which one of the following metals does not exhibit emission of electrons from its surface when irradiated by…

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17. Q30 2023

    Light of frequency $6{\cdot}4 \times 10^{14}$ Hz is incident on a metal of work function $2{\cdot}14$ eV. The…

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18. Q32 2023

    Questions number 16 to 18 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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