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

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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.

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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

• 4125 Å
• 2062.5 Å
• 3000 Å
• 6000 Å

3000 Å

• 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

• 1 : 2
• 2 : 1
• 1 : 1
• 1 : 3

1 : 2

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

I1 < I2

• Blue
• Yellow
• Violet
• Red

Violet

• h
• h/e
• eh
• e

h/e

• 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

• 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

• 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

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Updated: January 3, 2022 — 10:35 am