# MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation with Answer Keys

If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Physics Chapterwise. In this article of AKVTutorials, you will get MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation with Answer Keys

MCQ Questions for Class 12 Physics Chapter 11 Question No 1:

An electron and a proton have the same de Broglie wavelength. Then the kinetic energy of the electron is:

Option A :Zero

Option B : Infinity

Option C : Equal to the kinetic energy of the proton

Option D : Greater then the kinetic energy of the proton

Option D : Greater then the kinetic energy of the proton

MCQ Questions for Class 12 Physics Chapter 11 Question No 2:

The energy of a photon is 20eV. Its momentum in kg m/s is:

Option A : 2.56 ×  10-27

Option B : 5.33 ×  10-27

Option C : 1.066 ×  10-26

Option D : 2.13 × 10-26

Option A : 1.066 ×  10-26

MCQ Questions for Class 12 Physics Chapter 11 Question No 3:

When radiation of given frequency is incident upon different metals, the maximum kinetic energy of electrons emitted

Option A : Decrease with increased of work function

Option B : Increase with increase of work function

Option C : Remains same with the increases of work function

Option D : Does not depend upon word function

Option A : Decrease with increased of work function

MCQ Questions for Class 12 Physics Chapter 11 Question No 4:

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

Option A : Blue

Option B : Yellow

Option C : Violet

Option D : Red

Option C : Violet

MCQ Questions for Class 12 Physics Chapter 11 Question No 5:

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

Option A : Equal to threshold frequency

Option B : Half of threshold frequency

Option C : Greater than threshold frequency

Option D : One third of threshold frequency

Option C : Greater than threshold frequency

MCQ Questions for Class 12 Physics Chapter 11 Question No 6:

The rest mass of the proton is :

Option A : 0

Option B : ∞

Option C : Between 0 and ∞

Option D : Equal to that of an electron

Option A : 0

MCQ Questions for Class 12 Physics Chapter 11 Question No 7:

The momentum of a photon of energy hv will be:

Option A : hv

Option B : hv/c

Option C : hvc

Option D : h/v

Option B : hv/c

MCQ Questions for Class 12 Physics Chapter 11 Question No 8:

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

Option A : 4125 A

Option B : 2062.5 A

Option C : 3000 A

Option D : 6000 A

Option C : 3000 A

MCQ Questions for Class 12 Physics Chapter 11 Question No 9:

If E1 and E2 are the respective kinetic energies of deuteron and proton having same De-Brohlie wavelength.

Option A : E1 > E2

Option B : E1 < E2

Option C : E1 = E2

Option D : None of these

Option B : E1 < E2

MCQ Questions for Class 12 Physics Chapter 11 Question No 10:

The threshold wavelength for a metal having

Option A : 4 λ0

Option B : 2 λ 0

Option C : λ0 / 2

Option D : λ0/4

Option B : 2 λ 0

CBSE Class 12 Physics Chapterwise MCQ
1 : Electric Charge & Fields MCQs
| 1 to 10 | 11 to 20
2 : Electrostatics Potential and Capacitance MCQs
| 1 to 10 | 11 to 20
3 : Current Electricity MCQs
| 1 to 10 | 11 to 20
4 : Moving charges and Magnetism MCQs
| 1 to 10 | 11 to 20
5 : Magnetism and Matter MCQs
| 1 to 10 | 11 to 20
6 : Electromagnetic Induction MCQs
| 1 to 10 | 11 to 20
7 : Alternating Current MCQs
| 1 to 10 | 11 to 20
8 : Electromagnetic Waves MCQs
| 1 to 10 | 11 to 20
9 : Ray Optics and Optical Instruments MCQs
| 1 to 10 | 11 to 20
10 : Wave Optics MCQs
| 1 to 10 | 11 to 20
11 : Dual Nature of Radiation MCQs
| 1 to 10 | 11 to 20
12 : Atoms MCQs
| 1 to 10 | 11 to 20
13 : Nuclei MCQs
| 1 to 10 | 11 to 20
14 : Semi Conductor Electronics MCQs
| 1 to 10 | 11 to 20
15 : Communication Systems MCQs
| 1 to 10 | 11 to 20