Jump to a section

Physics - Dual Nature of Matter

Practise 216 MHTCET previous year questions on Dual Nature of Matter, compiled from papers spanning 2007 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty MHTCET tests.

Dual Nature of Matter has been asked in 16 of the 17 years of MHTCET papers analysed (2007–2026), with 216 questions in all. 44% of them were easy, 48% moderate and 8% tough. Most of its questions came from 2024, with 33 questions that year. In the last three years (2024–2026) it had 94 questions across 59 papers, about 1.6 per paper.

The chapter's 3 topics are not weighted equally: Photoelectric Effect (149 questions, 69%), Matter Waves (66 questions, 31%), and Cathode Rays and Positive Rays (1 question, 0%) have been asked the most. Photoelectric Effect has also led over the last five years, with 94 questions. Photoelectric Effect has produced the most tough questions (9).

  1. 1Two identical photocathodes receive light of frequencies and . If the velocities of the emitted photoelectrons of mass m are and respectivel20 Apr, 2026 (M)Photoelectric Effect
  2. 2The proton and - particle are accelerated through same potential difference. Then the ratio of the de-Broglie wavelength of proton and - par20 Apr, 2026 (M)Matter Waves
  3. 3The ratio of de-Broglie wavelength of an -particle and proton accelerated from rest by the same potential is . The value of is20 Apr, 2026 (E)Matter Waves
  4. 4According to Einstein's photoelectric equation, the graph of the kinetic energy of the emitted photoelectrons versus the frequency of incide19 Apr, 2026 (M)Photoelectric Effect
  5. 5A photoelectric surface is illuminated successively by monochromatic light of wavelength and . If the maximum kinetic energy of the emitted 19 Apr, 2026 (M)Photoelectric Effect
  6. 6When light of wavelength ' ' is incident on a photosensitive surface, the stopping potential is 'V'. When a light of wavelength is incident 19 Apr, 2026 (E)Photoelectric Effect
  7. 7In case of photoelectric emission from certain metal, the cutoff frequency is . If the radiation of frequency is incident on the metal plate18 Apr, 2026 (M)Photoelectric Effect
  8. 8If the kinetic energy of a particle is increased to 16 times, the percentage change in the de Broglie wavelength of a particle is18 Apr, 2026 (M)Matter Waves
  9. 9The de Broglie wavelength of the electron in the ground state is and that in the level is then is given by18 Apr, 2026 (E)Matter Waves
  10. 10The maximum kinetic energies of photoelectrons emitted are and when light of wavelength and respectively are incident on a metallic surface.18 Apr, 2026 (E)Photoelectric Effect
  11. 11The kinetic energy of a free electron increases to 3 times the previous K.E. The ratio of new de-Broglie wavelength to previous de-Broglie w17 Apr, 2026 (M)Matter Waves
  12. 12Photoelectric emission is observed from a metallic surface for frequencies and of the incident light rays ( ). If the ratio of maximum value17 Apr, 2026 (M)Photoelectric Effect
  13. 13In photoelectric effect, keeping the frequency of incident radiation and accelerating potential fixed, if the intensity of incident light is17 Apr, 2026 (E)Photoelectric Effect
  14. 14The ratio of the accelerating potentials required to accelerate (i) an -particle and (ii) a proton to have the same de Broglie wavelength as17 Apr, 2026 (E)Matter Waves
  15. 15Using Einstein's photoelectric equation, the graphical representation between the kinetic energy (E) of emitted Photoelectrons and the frequ16 Apr, 2026 (M)Photoelectric Effect
  16. 16For a photosensitive material, work function is ' ' and stopping potential is 'V'. The wavelength of the incident radiation is (h=Planck's c16 Apr, 2026 (M)Photoelectric Effect
  17. 17A photoemissive substance is illuminated with a radiation of wavelength so that it releases electrons with de-Broglie wavelength . The longe16 Apr, 2026 (E)Photoelectric Effect
  18. 18When a light of wavelength ' ' falls on the emitter of a photosensitive surface, maximum speed of emitted photoelectrons is 'V'. If the inci16 Apr, 2026 (E)Photoelectric Effect
  19. 19Light of wavelength ' ' which is less than threshold wavelength is incident on a photosensitive material. If incident wavelength is decrease15 Apr, 2026 (M)Photoelectric Effect
  20. 20In photoelectric effect experiment, if the frequency of incident radiation ( ) is increased, keeping all other factors constant, the stoppin15 Apr, 2026 (E)Photoelectric Effect
  21. 21When a metallic surface is illuminated with a radiation of wavelength ' ', the stopping potential is 'V'. If the same surface is illuminated15 Apr, 2026 (E)Photoelectric Effect
  22. 22Which one of the four graphs showing lines P, Q, R and S between maximum kinetic energy (E) and intensity of incident radiation (I) is corre13 Apr, 2026 (M)Photoelectric Effect
  23. 23Energy of the incident photons on the photosensitive metal surface is 3W and then 5W where 'W' is the work function of that metal. The ratio13 Apr, 2026 (M)Photoelectric Effect
  24. 24An electron accelerated through a potential difference has a de-Broglie wavelength of . When the potential is changed to , its de-Broglie wa13 Apr, 2026 (E)Matter Waves
  25. 25The threshold frequency of metal is . When the light of frequency is incident on the metal plate, the maximum velocity of photoelectron is .13 Apr, 2026 (E)Photoelectric Effect
  26. 26A photon and an electron have equal energy E. The ratio of (electron) to (photon) is proportional to11 Apr, 2026 (M)Photoelectric Effect
  27. 27Photoelectric emission is observed from a metallic surface for frequencies and of the incident light rays ( ). If the maximum values of kine11 Apr, 2026 (M)Photoelectric Effect
  28. 28According to de-Broglie hypothesis, the ratio of the wave-length of a photon and that of an electron having same energy 'E' is (m = mass of 11 Apr, 2026 (E)Matter Waves
  29. 29Photoelectrons are emitted from two similar metal plates when wavelengths and are incident on them ( ). If maximum kinetic energy of emitted11 Apr, 2026 (E)Photoelectric Effect
  30. 30A photosensitive surface has work function . If photon of energy falls on this surface, the electron comes out with maximum velocity of . Wh05 May, 2025 (E)Photoelectric Effect
  31. 31Energy of the incident photons on the metal surface is initially 4 W and then 6 W where W is the work function of that metal. The ratio of v05 May, 2025 (E)Photoelectric Effect
  32. 32The work functions of Caesium (Cs), Potassium (K) and sodium (Na) are , and 2.75 eV respectively. If incident electromagnetic radiation has 27 Apr, 2025 (E)Photoelectric Effect
  33. 33If and represent kinetic energy of photon and electron respectively. If de-Broglie wavelength of a photon is twice the de-Broglie wavelength27 Apr, 2025 (E)Matter Waves
  34. 34Light of incident frequency 3 times the threshold frequency is incident on a photosensitive material. If the incident frequency is made and 26 Apr, 2025 (M)Photoelectric Effect
  35. 35The wavelength ' ' of a photon and the de-Broglie wavelength of an electron have same value. the ratio of kinetic energy of the electron to 26 Apr, 2025 (M)Matter Waves
  36. 36Let and represents kinetic energy of electron and photon respectively. If de-Broglie wavelength of a photon is twice the de-Broglie waveleng26 Apr, 2025 (E)Matter Waves
  37. 37The graph shows the variation of photocurrent with anode potential for four different radiations. Let and are intensities and and be the fre26 Apr, 2025 (E)Photoelectric Effect
  38. 38When a metal surface is illuminated by light of wavelength and , the maximum velocities of photoelectrons ejected are V and 2 V respectively25 Apr, 2025 (M)Photoelectric Effect
  39. 39Sodium and copper have work functions and respectively. The ratio of threshold wavelength of sodium to that of copper is nearest to25 Apr, 2025 (M)Photoelectric Effect
  40. 40If the frequency of incident light in a photoelectric experiment is doubled, then stopping potential will25 Apr, 2025 (E)Photoelectric Effect
  41. 41An electron of mass ' m ' and charge ' e ' initially at rest gets accelerated by a constant electric field ' '. The rate of change of de-Bro25 Apr, 2025 (E)Matter Waves
  42. 42For two different photosensitive materials having work function and respectively, are illuminated with light of sufficient energy to emit el23 Apr, 2025 (M)Photoelectric Effect
  43. 43The energy that should be added to an electron to reduce its de-Broglie wavelength from to is n times the initial energy. The value of ' n '23 Apr, 2025 (M)Matter Waves
  44. 44Graph shows variation of stopping potential with frequency of incident radiation on a metal plate. The value of Planck's constant is [ charg23 Apr, 2025 (E)Photoelectric Effect
  45. 45Electron beam when accelerated by a voltage of 10 kV , has a de-Broglie wavelength ' '. If the voltage is increased to 20 kV then the de-Bro23 Apr, 2025 (E)Matter Waves
  46. 46When a photosensitive metal surface is illuminated with radiation of wavelength ' ', the stopping potential is ' ' . If the same surface is 22 Apr, 2025 (M)Photoelectric Effect
  47. 47From photoelectric effect experiment, select the correct statement.22 Apr, 2025 (M)Photoelectric Effect
  48. 48Photoelectric emission takes place from a certain metal at threshold frequency . If the radiation of frequency is incident on the metal plat22 Apr, 2025 (E)Photoelectric Effect
  49. 49The de-Broglie wavelength of a neutron at is ' '. What will be its wavelength at ?22 Apr, 2025 (E)Matter Waves
  50. 50The de-Broglie wavelength of a particle21 Apr, 2025 (M)Matter Waves

Frequently Asked Questions

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

This chapter includes 216 questions compiled from MHTCET papers spanning 2007 to 2026.

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

These are MHTCET 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 MHTCET Physics?

Dual Nature of Matter has appeared in 16 of the 17 years of MHTCET papers covered here, with 216 questions across 105 papers - about 2 per paper it appears in.

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

Of the 216 questions analysed for this chapter, 44% are easy, 48% moderate and 8% tough. 2024 had the most, with 33 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 - 149 questions (69%)
  • Matter Waves - 66 questions (31%)
  • Cathode Rays and Positive Rays - 1 question (0%)
  • Photoelectric Effect has produced the most tough questions (9).
6.Is Dual Nature of Matter's weightage in MHTCET going up or down?

Across all 105 papers analysed, Dual Nature of Matter has averaged about 2.1 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.