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MDCAT XII Physics Atomic Physics Online Test-2

XII Physics Atomic Physics Online test 2
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Instructions for MDCAT XII Quantam Physics online test Online Test-2:

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      Test Details:

      • Subject: Physics
      • Class: 2nd year / XIIΒ 
      • Chapter Name: Atomic PhysicsΒ 
      • Test: MDCAT 2025
      • Book: Sindh Textbook
      • Total No. Of MCQS:Β  50 MCQSΒ 
      • Time Allowed: 50 Minutes
      • Price: Free
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      Created on By medicoengineer.com

      MDCAT XII Physics Atomic Physics Online Test-2

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      1 / 50

      1. Which of the following is correct regarding the energy level of an electron in an atom?

      2 / 50

      2. Electrons present in an atom have:

      3 / 50

      3. An electron in a hydrogen atom jumps from the second excited state to the ground state. What is the frequency of the emitted radiation?

      4 / 50

      4. In which transition is radiation with more energy absorbed?

      5 / 50

      5. Elements can be identified by their:

      6 / 50

      6. If the energy of a radiation is 6.63 Γ— 10⁻¹⁰ J, what will be its frequency?

      7 / 50

      7. Photons are deflected in:

      8 / 50

      8. Which of the following is the correct series in the laser principle?

      9 / 50

      9. A line spectrum formed is a:

      10 / 50

      10. In which transition is radiation with the greatest wavelength released?

      11 / 50

      11. Emission spectra are classified into:

      12 / 50

      12. What is/are the limitation(s) of Bohr's model?

      13 / 50

      13. In inner shell transitions of X-rays, the K-beta series is given when the electron jumps from:

      14 / 50

      14. Molecules under higher pressure give:

      15 / 50

      15. What is the kinetic energy of an electron when its total energy is -10 MeV?

      16 / 50

      16. Which of the following is not a property of a photon?

      17 / 50

      17. If the frequency of a radiation is doubled, its velocity will:

      18 / 50

      18. The uncertainty principle is applied to:

      19 / 50

      19. Continuous spectrum can be emitted by:

      20 / 50

      20. What is the uncertainty in position, if uncertainty in momentum is zero?

      21 / 50

      21. K-series is formed in inner shell transitions of X-rays when:

      22 / 50

      22. Choose the correct statement regarding the hydrogen atom:

      23 / 50

      23. What is a spectral line?

      24 / 50

      24. A hydrogen atom consists of:

      25 / 50

      25. Which one is correct regarding the hydrogen atom?

      26 / 50

      26. When a metal is illuminated with light of frequency 1 Γ— 10¹⁡ Hz, whose work function is 3.63 Γ— 10⁻¹⁹ J, what will be the maximum kinetic energy of the photoelectrons?

      27 / 50

      27. The Neil Bohr model gives quantitative determination of frequency emitted during:

      28 / 50

      28. The centripetal force on an electron revolving around the nucleus is provided by:

      29 / 50

      29. What is the wavelength of radiation whose energy is 6.63 Γ— 10⁸ J?

      30 / 50

      30. What is the kinetic energy of an electron if potential energy is equal to 5 eV?

      31 / 50

      31. Radius of an orbit is:

      32 / 50

      32. How much energy is required to excite an electron from ground state to infinity level?

      33 / 50

      33. X-rays are more powerful electromagnetic radiations than all other except:

      34 / 50

      34. Which of the following has the lowest wavelength?

      35 / 50

      35. What is the wavelength range of X-rays?

      36 / 50

      36. Which quantum number(s) are used to determine the energy of an orbital?

      37 / 50

      37. LASER stands for:

      38 / 50

      38. What is the key factor to produce laser light?

      39 / 50

      39. Which of the following is not a property of laser light?

      40 / 50

      40. In spontaneous emission, which factor is not suitable for laser light production?

      41 / 50

      41. Monochromatic light is light which has:

      42 / 50

      42. Energy of the second excited state of a hydrogen atom is:

      43 / 50

      43. Laser lights are used in:

      44 / 50

      44. X-rays are deflected by:

      45 / 50

      45. If an electron jumps from the 3rd to the 2nd orbit, how much energy is released?

      46 / 50

      46. Excitation energy is the energy:

      47 / 50

      47. Ionization potentials of an electron are ----- and excitation potentials are -----

      48 / 50

      48. Excitation energy of the 5th orbit of a hydrogen atom is:

      49 / 50

      49. The value of stopping potential will be zero when frequency of incident radiation is ------ to the threshold frequency:

      50 / 50

      50. What will be the threshold frequency of a photoelectric material if the work function of that material is 6.63 eV?

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