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Physics - Dual Nature of Matter

Practise 38 VITEEE previous year questions on Dual Nature of Matter, compiled from papers spanning 2006 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty VITEEE tests.

Dual Nature of Matter has been asked in 17 of the 18 years of VITEEE papers analysed (2006–2024), with 38 questions in all. 58% of them were easy, 32% moderate and 11% tough. Most of its questions came from 2012, with 5 questions that year. In the last three years (2022–2024) it had 3 questions across 3 papers, about 1 per paper.

The chapter's 4 topics are not weighted equally: Photoelectric Effect (21 questions, 55%), Matter Waves (11 questions, 29%), and Cathode Rays and Positive Rays (4 questions, 11%) have been asked the most. Photoelectric Effect has also led over the last five years, with 4 questions. Photoelectric Effect has produced the most tough questions (3).

  1. 1A metal surface is illuminated with photons of energies and respectively. The ratio of maximum speeds of the photoelectrons in two cases is 2024Photoelectric Effect
  2. 2Light of frequency \(5 v_0\) falls on a photosensitive surface of the threshold frequency \(v_0\). The velocity of emitted electrons is \(4 2023Photoelectric Effect
  3. 3In a photoelectric experiment anode potential is plotted against plate current2022Photoelectric Effect
  4. 4Photoelectric work function of a metal is . Light of wavelength falls on it. The photo electrons come out with a maximum velocity of :2021Photoelectric Effect
  5. 5If the kinetic energy of a free electron doubles, it's de-Broglie wavelength changes by the factor2019Matter Waves
  6. 6The surface of a metal is illuminated with the light of . The kinetic energy of the ejected photoelectrons was found to be . The work functi2019Photoelectric Effect
  7. 7In a photoelectric effect measurement, the stopping potential for a given metal is found to be volt when radiation of wavelength is used. If2018Photoelectric Effect
  8. 8If the kinetic energy of a moving particle is , then the de-Broglie wavelength is2017Matter Waves
  9. 9Light of wavelength is incident on a metal with work function . The de Broglie wavelength of the emitted electron is:2017Matter Waves
  10. 10In photoelectric effect, initially when energy of electrons emitted is , de-Broglie wavelength associated with them is . Now, energy is doub2016Photoelectric Effect
  11. 11If the wavelength is brought down from to in a photoelectric experiment then what will happen?2016Photoelectric Effect
  12. 12Let the energy of an emitted photoelectron be and thewave-length of incident light be . What will be the change in if is doubled?2016Photoelectric Effect
  13. 13When the momentum of a photon is changed by an amount ' then the corresponding change in the de-Broglie wavelength is found to be . Then, th2015Matter Waves
  14. 14Suppose a beam of electrons with each electron having energy incident on a metal surface kept in an evacuated chamber. Then,2015Photoelectric Effect
  15. 15When sunlight is scattered by atmospheric atoms and molecules the amount of scattering of light of wavelength is . Then, the amount of scatt2015Matter Waves
  16. 16A metallic surface ejects electrons. When exposed to green light of intensity I but no photoelectrons are emitted,when exposed to yellow lig2014Photoelectric Effect
  17. 17Silver has a work function of . When ultraviolet light of wavelength is incident on it a potential of is required to stop the photoelectrons2014Photoelectric Effect
  18. 18If the distance of lamp is increased from a photocell, the saturation current in the photocell varies with the distance as2014Photoelectric Effect
  19. 19An eye can detect photons per square meter per sec of green light while the ear can detect . The factor by which the eye is more sensitive a2014Photoelectric Effect
  20. 20The threshold frequency for a photo-sensitine metal is . If light of frequency is incident on this metal, the cut-off voltage for the photo-2012Photoelectric Effect
  21. 21and are two metals with threshold frequencies and . Two identical photons of energy each are incident on them. Then photoelectrons are emitt2012Photoelectric Effect
  22. 22The kinetic energy of an electron get tripled then the de-Broglie wavelength associated with it changes by a factor2012Matter Waves
  23. 23In a hydrogen discharged tube it is observed that through a given cross-section electrons are moving from right to left and protons are movi2012Cathode Rays and Positive Rays
  24. 24In photoelectric emission process from a metal of work function , the kinetic energy of most energetic electrons is . The corresponding stop2012Photoelectric Effect
  25. 25Light of two different frequencies whose photons have energies and , respectively, successively illum inate a metal whose work function is .2011Photoelectric Effect
  26. 26An electron accelerated under a potential difference volt has a certain wavelength . Mass of proton is some 2000 times of the mass of the el2011Photoelectric Effect
  27. 27The ratio of momentum of an electron and -particle which are accelerated from rest by a potential difference of is2011Matter Waves
  28. 28There area bulb and a line. Which eletric bulb will glow more brightly?2010Matter Waves
  29. 29In Meter bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so rem2010Cathode Rays and Positive Rays
  30. 30The work function of a certain metal is J. Then, the maximum kinetic energy of photoelectrons emitted by incident radiation of wavelength is2009Photoelectric Effect
  31. 31A photon of energy ejects a photoelectron from a metal surface whose work function is . If this electron enters into a uniform magnetic fiel2009Davison and Germer Experiment
  32. 32Which phenomenon best supports the theory that matter has a wave nature?2008Matter Waves
  33. 33In the circuit shown above, an input of is fed into the inverting input of an ideal Op-amp A. The output signal will be2008Cathode Rays and Positive Rays
  34. 34If the force exerted by an electric dipole on a charge at a distance of is , the force at a point away in the same direction will be2008Photoelectric Effect
  35. 35A solid sphere of radius and volume charge density is enclosed by a hollow sphere of radius with negative surface charge density , such that2008Davison and Germer Experiment
  36. 36A photo-sensitive material would emit electrons if excited by photons beyond a threshold. To overcome the threshold, one would increase2007Matter Waves
  37. 37The temperature coefficient of a zener mechanism is2007Cathode Rays and Positive Rays
  38. 38The deBroglie wavelength associated with a steel ball of mass moving at a speed of is2006Matter Waves

Frequently Asked Questions

1.How many questions are available for Dual Nature of Matter?

This chapter includes 38 questions compiled from VITEEE papers spanning 2006 to 2024.

2.Are these questions only from VITEEE, or from other exams too?

These are VITEEE questions specifically for the Dual Nature of Matter chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Dual Nature of Matter an important chapter for VITEEE Physics?

Dual Nature of Matter has appeared in 17 of the 18 years of VITEEE papers covered here, with 38 questions across 17 papers - about 2 per paper it appears in.

4.What is the difficulty level of Dual Nature of Matter questions in VITEEE?

Of the 38 questions analysed for this chapter, 58% are easy, 32% moderate and 11% tough. 2012 had the most, with 5 questions.

5.Which topics in Dual Nature of Matter should I focus on?

These topics have carried the most weightage in Dual Nature of Matter:

  • Photoelectric Effect - 21 questions (55%)
  • Matter Waves - 11 questions (29%)
  • Cathode Rays and Positive Rays - 4 questions (11%)
  • Photoelectric Effect has produced the most tough questions (3).
6.Is Dual Nature of Matter's weightage in VITEEE going up or down?

Across all 17 papers analysed, Dual Nature of Matter has averaged about 2.2 questions per paper. In the last three years (2022–2024), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.