Dual Nature of Radiation and Matter-4
Class 12 Physics Science

MCQ Questions Class 12 Dual Nature of Radiation and Matter With Answers

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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 - 4

Question 1: 

Which one of the following is not dependent on the intensity of incident photon in a photoelectric experiment ? 
(a) work function of the surface
(b) kinetic energy of photo-electron
(c) stopping potential
(d) amount of photo-electric current

Correct Answer – (B)

Question 2 : 

When an electron jumps across a potential difference of 1 V, it gains energy equal to :
(a) 1.602 × 10-19 J
(b) 1.602 × 1019 J
(c) 1.602 × 1024 J
(d) 1 J

Correct Answer – (A)

Question 3 : 

Compared to liquids and solids, gases are:
(a) good conductors of electricity
(b) best conductors of electricity
(c) very poor conductors of electricity
(d) good or bad conductors of electricity depending upon the nature of the gas

Correct Answer – (C)

Question 4 : 

Which Characteristic of a target does the Mosley’s law relate the frequency of X-rays?
(a) density
(b) atomic number
(c) atomic weight
(d) interatomic space

Correct Answer – (B)

Question 5 : 

The de-Broglie wavelength of particle of mass 1 mg moving with a velocity of 1 ms-1, in terms of Planck’s constant h, is given by (in metre):
(a) 105 h
(b) 106 h
(c) 10-3 h
(d) 103 h

Correct Answer – (B)

MCQ Questions Class 12 Dual Nature of Radiation and Matter with Answers

Question 6 : 

X-ray will not show the phenomenon of : 
(a) interference
(b) deflection by electric field
(c) diffraction
(d) superposition

Correct Answer – (B)

Question 7 : 

The different stages of discharge in a discharge tube can be explained on the basis of:
(a) the wave nature of light
(b) the dual nature of light
(c) wave nature of electrons
(d) the collision between the charged particles emitted from the cathode the atoms of the gas in the tube

Correct Answer – (D)

Question 8 : 

The charge of a photo electron is :
(a) 9.1 × 10-31 C
(b) 9.1 × 10-27 C
(c) 9.1 × 10-24 C
(d) none of these

Correct Answer – (D)

Question 9 : 

Evidence of the wave nature of light cannot be obtained from:
(a) diffraction
(b) interference
(c) doppler effect
(d) reflection

Correct Answer – (D)

Question 10 : 

When a yellow light is incident on a surface, no electrons are emitted while green light can emit electrons. If the red light is incident on the surface then:
(a) no electrons are emitted
(b) photons are emitted
(c) electrons of higher energy are emitted
(d) electrons of lower energy are emitted

Correct Answer – (A)
MCQ Questions Class 12 Dual Nature of Radiation and Matter with Answers
Set 1
Set 2
Set 3
Set 4
Set 5

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