MEDIUM
JEE Main
IMPORTANT
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Given below are two statements :

Statement I : Davisson-Germer experiment establishes the wave nature of electrons.

Statement II : If electrons have wave nature, they can interfere and show diffraction.

In the light of the above statements choose the correct answer from the option given below :

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Important Questions on Dual Nature of Matter and Radiation

EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 25 June 2022 Shift 2>Q 77
A proton, a neutron, an electron and an α-particle have same energy. If λp,λn,λe and λα are the de Broglie's wavelengths of proton, neutron, electron and α particle respectively, then choose the correct relation from the following 
HARD
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 26 June 2022 Shift 2>Q 78
A metal surface is illuminated by a radiation of wavelength 4500 A∘. The ejected photo-electron enters a constant magnetic field of 2 mT making an angle of 90° with the magnetic field. If it starts revolving in a circular path of radius 2 mm, the work function of the metal is approximately
HARD
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 26 June 2022 Shift 2>Q 79
The stopping potential for photoelectrons emitted from a surface illuminated by light of wavelength 6630Å is 0.42 V. If the threshold frequency is x×1013 s, where x is (nearest integer): (Given, speed light =3×108 m s-1.  Planck's constant =6.63×10-34 J s)
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 26 June 2022 Shift 1>Q 80
An electron with speed $v$ and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of electron are Ee and Pe and that of photon are Eph and Pph respectively. Which of the following is correct?
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 27 June 2022 Shift 1>Q 81
An α particle and a carbon 12 atom has same kinetic energy K. The ratio of their de-Broglie wavelengths λα:λC12 is 
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 28 June 2022 Shift 1>Q 82
The de Broglie wavelengths for an electron and a photon are λe and λp respectively. For the same kinetic energy of electron and photon, which of the following presents the correct relation between the de Broglie wavelengths of two?
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 28 June 2022 Shift 2>Q 83
Let K1 and K2 be the maximum kinetic energies of photo-electrons emitted when two monochromatic beams of wavelength λ1 and λ2, respectively are incident on a metallic surface. If λ1=3λ2 then :
HARD
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 20 - Dual Nature of Matter and Radiation>JEE Main - 29 June 2022 Shift 1>Q 84

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : The photoelectric effect does not take place, if the energy of the incident radiation is less than the work function of a metal.

Reason R : Kinetic energy of the photoelectrons is zero, if the energy of the incident radiation is equal to the work function of a metal.