Physics Class 12 MCQ Dual Nature of Radiation And Matter – Chapter 11

Want to get good grades in your Class 12 Physics Board Exams, so start the practice from today on wards. In this article, we have some important MCQs of Dual Nature Of Radiation And Matter Chapter 11 for you all, you can scroll down the post and start practicing these MCQs of Dual Nature Of Radiation And Matter and improve your score of Physics.

Dual Nature Of Radiation And Matter is an easy an scoring subject and if you prepare it well, then it is definitely going to benefit you a lot. Here we have provided you with some really important NCERT 12 MCQs of the chapter Dual Nature Of Radiation And Matter, practice these questions and get and idea about what type of questions could be asked from you all.

Physics Class 12 MCQ Electromagnetic Waves – Chapter 8

Physics Class 12 MCQ Ray Optics And Optical Instruments – Chapter 9

Physics Class 12 MCQ Dual Nature Of Radiation And Matter – Chapter 11

Ques 1: The theory, on the basis of Photoelectric effect can be explained:

  • Corpuscular theory
  • Wave theory
  • Electromagnetic theory
  • Quantum theory

Quantum theory

Ques 2: The photoelectric function for a metal surface is 4.14 eV. The cutoff wavelength for this is:

  • 4125 Å
  • 2062.5 Å
  • 3000 Å
  • 6000 Å

3000 Å

Ques 3: If E1, E2, E3, E4 are the respective kinetic energies of electron, deuteron, proton and neutron having same De-Broglie wavelength. Select the correct order in which those values would increase:

  • E1,E3,E4,E2
  • E2,E4,E1,E3
  • E2,E4,E3,E1
  • E3,E1,E2,E4

E2,E4,E3,E1

Ques 4: When radiation of given frequnecy is incident upon different metals, the maximum kinetic energy of electrons emitted

  • decrease with increase of work function
  • increase with increase of work function
  • remains same with the increase of work function
  • does not depend upon work function

decrease with increase of work function

Dual Nature of Radiation and Matter Class 12 MCQs

Ques 5: A proton, a neutron, an electron and alpha particle have same kinetic energy, then their De-Broglie wavelengths compare as

  • λe = λp = λn = λa
  • λe > λp > λn > λa
  • λe < λp < λn < λe
  • λp = λn = λe = λa

λe > λp > λn > λa

Ques 6: The monochromatic beams A and B of equal intensities I, hit a scree. The number of photons hitting the screen by beam A is twice than that by beam B. The ratio of their frequencies will be

  • 1 : 2
  • 2 : 1
  • 1 : 1
  • 1 : 3

1 : 2

Ques 7: Following graph shows the variation of photoelectric current with anode potential for two light beam of same wavelength but different intensity. Find the correct relation:

  • I1 > I2
  • I1 = I
  • I1 < I2
  • I1 ≤ I2

I1 < I2

Ques 8: Which of the following has maximum stopping potential when metal is illuminated by visible light?

  • Blue
  • Yellow
  • Violet
  • Red

Violet

Ques 9: The slop of frequency of incident ray and stopping potential for a given surface will be

  • h
  • h/e
  • eh
  • e

h/e

Ques 10: The threshold wavelength for a metal having work function ∅0 is λ0, what is the threshold wavelength for a metal whose work function is ∅0/2

  • 4 λ0
  • 2 λ0
  • λ0/2
  • λ0/4

2 λ0

Ques 11: Maximum kinetic energy of emitted electron depends on the frequency of incident photon when frequency of incident photons is

  • equal to the threshold frequency
  • half of threshold frequency
  • greater then threshold frequency
  • one third of threshold frequency

greater then threshold frequency

Physics MCQs for Class 12 – Dual Nature of Matter and Radiation

Ques 12: Two particles have equal momentum. What is the ratio of their de-Broglie wavelength ?

  • 2
  • 1
  • 3
  • 0.5

1

Ques 13: Identify the correct relation for given diagram for frequency

  • v1 = v2 = v3
  • v1 > v2 > v3
  • v1 < v2 < v3
  • v1 =2 v2 = 3 v3

v1 < v2 < v3

Ques 14: What is de-Broglie wavelength associated with electron moving under a potential difference of 104V

  • 12.27 nm
  • 1 nm
  • 0.01227 nm
  • 0.1227 nm

0.01227 nm

Ques 15: Two photon, each of energy 2.5 eV are simultaneously incident on the metal surface. If the work function of the metal is 4.5 eV, then from the surface of metal

    • One electrons will be emitted with energy 0.5 eV
    • Two electrons will be emitted with energy 0.25 eV
    • more than two electrons will be emitted
    • not a single electron will be emitted

    not a single electron will be emitted

Physics Chapter Wise MCQ Questions and Answers

  1. Electrostatic Charges and Fields MCQ – Chapter 1
  2. Electrostatic Potential and Capacitance MCQ – Chapter 2
  3. Current Electricity MCQ Question Answer – Chapter 3
  4. Moving Charges and Magnetism MCQ – Chapter 4
  5. Magnetism And Matter MCQ – Chapter 5
  6. Electromagnetic Induction MCQ – Chapter 6
  7. MCQ Alternating Current MCQ – Chapter 7
  8. Electromagnetic Waves MCQ – Chapter 8
  9. Ray Optics And Optical Instruments MCQ – Chapter 9
  10. MCQ Wave Optics MCQ – Chapter 10
  11. Dual Nature of Radiation and Matter MCQ – Chapter 11
  12. Atoms MCQ – Chapter 12

physics 12 mcq

We hope you liked the collection of questions of Dual Nature Of Radiation And Matter. Keep practicing these questions and make your concepts very strong. In case of queries, do let us know via comment box below.

Updated: October 17, 2021 — 11:57 am

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