Dual Nature of Radiation & Matter — JEE Main PYQs & Practice Questions

Dual Nature of Radiation & Matter is a Physics chapter in the JEE Main syllabus. This page brings together 156 previous-year and practice questions on Dual Nature of Radiation & Matter, organised into 4 topics: Photoelectric Effect, Work Function and Threshold Frequency, de Broglie Wavelength and Davisson-Germer Experiment. Most questions come with a step-by-step solution you can work through free in PrepWiser.

Download Dual Nature of Radiation & Matter JEE Main PYQs as a free PDF (with answer key)

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Photoelectric Effect

• For a certain metal, when monochromatic light of wavelength λ is incident, the stopping…
• The light of two different frequencies whose photons have energies 3.8 eV and 1.4 eV…
• In photoelectric effect an em-wave is incident on a metal surface and electrons are…
• The work functions of cesium (Cs) and lithium (Li) metals are 1.9 eV and 2.5 eV…
• Given below are two statements : one is labelled as Assertion A and the other is…
• A photoemissive substance is illuminated with a radiation of wavelength λᵢ so that it…
• A parallel beam of light of wavelength 900 nm and intensity 100 Wm⁻² is incident on a…
• The stopping potential for electrons emitted from a photosensitive surface illuminated…
• Two streams of photons, possessing energies equal to five and ten times the work…
• An electron and proton are separated by a large distance. The electron starts…
• In photo electric effect A. The photocurrent is proportional to the intensity of the…
• In photoelectric effect, the stopping potential (V₀) v / s frequency (v) curve is…
• When a metal surface is illuminated by light of wavelength λ, the stopping potential is…
• A light beam of wavelength 500 nm is incident on a metal having work function of 1.25…
• With reference to the observations in photo-electric effect, identify the correct…
• The ratio of the power of a light source S₁ to that the light source S₂ is 2 . S₁ is…
• Given below are two statements: Statement I : Out of microwaves, infrared rays and…
• A beam of electromagnetic radiation of intensity 6.4 × 10 –5 W/cm² is comprised of…
• The kinetic energy of emitted electron is E when the light incident on the metal has…
• Two sources of light emit X-rays of wavelength 1 nm and visible light of wavelength 500…

Work Function and Threshold Frequency

• The threshold frequency of a metal with work function 6.63 eV is :
• The difference between threshold wavelengths for two metal surfaces A and B having work…
• The work function of a substance is 3.0 eV. The longest wavelength of light that can…
• A metal surface is illuminated by a radiation of wavelength 4500 Aᵒ. The ejected…
• The work function of a metal is 3 eV . The color of the visible light that is required…
• A metallic surface is illuminated with radiation of wavelength λ, the stopping potential…

de Broglie Wavelength

• An α-particle, a proton and an electron have the same kinetic energy. Which one of the…
• An electron having de-Broglie wavelength λ is incident on a target in a X-ray tube…
• A moving proton and electron have the same de-Broglie wavelength. If K and P denote the…
• An electron moving with speed v and a photon moving with speed c, have same D-Broglie…
• If λ and K are de Broglie wavelength and kinetic energy, respectively, of a particle…
• An α particle and a proton are accelerated from rest through the same potential…
• An electron (mass m) with an initial velocity v⃗=v₀ î(v₀>0) is moving in an electric…
• An electron of mass ' m ' with an initial velocity v⃗=v₀ î(v₀>0) enters an electric…
• An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by…
• An α particle and a carbon 12 atom has same kinetic energy K. The ratio of their…
• The kinetic energy of an electron, α-particle and a proton are given as 4 K, 2 K and K…
• The de-Broglie wavelength associated with an electron and a proton were calculated by…
• The ratio of the de-Broglie wavelengths of proton and electron having same Kinetic…
• An α particle and a proton are accelerated from rest by a potential difference of 200V…
• A particle of mass 4M at rest disintegrates into two particles of mass M and 3M…
• A proton, a neutron, an electron and an α particle have same energy. If λₚ, λₙ, λₑ and…
• A particle is moving 5 times as fast as an electron. The ratio of the de-Broglie…
• A proton, an electron and an alpha particle have the same energies. Their de-Broglie…
• A proton and an electron are associated with same de-Broglie wavelength. The ratio of…
• An electron (mass m) with initial velocity v⃗ = v₀î + v₀ĵ is in an electric field E⃗ = -…

Davisson-Germer Experiment

• The de Broglie wavelength associated with an electron accelerated through a potential…
• Given below are two statements : One is labelled as Assertion A and the other is…
• The de Broglie wavelength for an electron accelerated through the potential difference…
• The Davisson-Germer experiment demonstrated:
• The Davisson-Germer experiment used X-rays scattered from a nickel target.
• A beam of electrons of energy E scatters from a target having atomic spacing of 1 Aᵒ…
• An electron of mass m is moving in an electric field E⃗=-2Eₒî(Eₒ= constant >0), with an…
• An electron is travelling with a velocity v in free space and when it enters a medium…
• The de Broglie wavelength of an oxygen molecule at 27°C is x× 10⁻¹² m. The value of x is…
• The ratio of de Broglie wavelength of a deutron with kinetic energy E to that of an…
• Given below are two statements : Statement I : Davisson-Germer experiment establishes…
• A particle having electric charge 3× 10⁻¹⁹C and mass 6× 10⁻²⁷ kg is accelerated by…

More Physics chapters

• Basic Mathematics for Physics
• Units, Dimensions & Errors
• Rectilinear Motion
• Vectors
• Projectile Motion & Relative Motion
• Newton's Laws of Motion
• Friction
• Circular Motion
• Work, Energy & Power
• Centre of Mass & Linear Momentum
• Collision
• Rotational Motion
• Gravitation
• Simple Harmonic Motion
• Elasticity
• Fluid Mechanics
• Surface Tension
• Thermometry & Calorimetry
• Kinetic Theory of Gases
• Thermodynamics
• Heat Transfer
• Mechanical Waves
• Sound Waves
• Experimental Skills
• Electrostatics I — Charges, Field & Gauss's Law
• Electrostatics II — Potential & Capacitance
• Current Electricity
• Moving Charges & Magnetism
• Magnetism & Matter
• Electromagnetic Induction
• Alternating Current
• Electromagnetic Waves
• Ray Optics
• Wave Optics
• Atomic Physics
• Nuclear Physics
• Semiconductors & Electronic Devices
• Communication Systems

Frequently asked questions

How many Dual Nature of Radiation & Matter questions are there for JEE Main?

PrepWiser has 156 Dual Nature of Radiation & Matter questions for JEE Main, grouped into 4 topics such as Photoelectric Effect, Work Function and Threshold Frequency and de Broglie Wavelength.

Are these Dual Nature of Radiation & Matter questions from previous-year JEE Main papers?

Yes — most are genuine previous-year questions from past JEE Main papers, and the rest are practice questions written to match the JEE Main pattern and difficulty.

Where can I see the answers and solutions to these Dual Nature of Radiation & Matter questions?

Open any Dual Nature of Radiation & Matter question in PrepWiser (it is free) to attempt it; most come with a step-by-step solution.