CBSE Class 12 Dual Nature of Radiation and Matter Multiple Choice Questions with Answers. MCQ Questions Class 12 Dual Nature of Radiation and Matter with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Dual Nature of Radiation and Matter MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Dual Nature of Radiation and Matter with Answers - Set - 2
Question 1:
The ratio of specific charge of an alpha particle to the proton is:
(a) 1 : 2
(b) 2 : 1
(c) 4 : 1
(d) 1 : 4
Correct Answer – (A)
Question 2 :
Protons and alpha particles have the same de-Broglie wavelength. What is same for both of them ?
(a) Energy
(b) Time period
(c) Frequency
(d) Momentum
Correct Answer – (D)
Question 3 :
The magnification produced by electron microscope is of the order of:
(a) 10
(b) 105
(c) 10³
(d) 107
Correct Answer – (B)
Question 4 :
The momentum of a photon is 10-27 kg ms-1. Its energy will be:
(a) 3 × 10-19 J
(b) 3 × 10-34 j
(c) 3 × 10-27 J
(d) none of these
Correct Answer – (A)
Question 5 :
When light is directed at the metal surface, the emitted electrons:
(a) are called photons
(b) have energies that depend upon the intensity of light.
(c) have random energies.
(d) have energies that depend upon the frequency of light.
Correct Answer – (D)
MCQ Questions Class 12 Dual Nature of Radiation and Matter with Answers
Question 6 :
Kinetic energy of emitted electrons depends upon :
(a) frequency
(b) intensity
(c) nature of atmosphere surrounding the electrons
(d) none of these
Correct Answer – (A)
Question 7 :
De-Broglie equation states the:
(a) dual nature
(b) particle nature
(c) wave nature
(d) none of these
Correct Answer – (A)
Question 8 :
With which of the following particles moving with same velocity de-Broglie wave length will be maximum?
(a) ß-particle
(b) ∝ particle
(c) electron
(d) Both A & C
Correct Answer – (D)
Question 9 :
The wavelength associated with n electron is 1Å. The potential difference required for accelerating it is
(a) 100 V
(b) 150 V
(c) 250 V
(d) 10³ V
Correct Answer – (B)
Question 10 :
The time required in emitting photo electrons is
(a) 10-8 s
(b) 10-4 s
(c) Zero
(d) 1 sec
Correct Answer – (C)
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