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Photons, Matter Waves and X-rays for NEET: 12 solved questions

Real NEET paper questions on photons, matter waves and x-rays, part of dual nature of matter and radiation. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 1989 to 2026. No sign-in needed to read them.

What this topic asks

• Matter wave against photon — 7 questions
• de Broglie relation and its graphs — 4 questions
• X-ray cut-off wavelength — 1 question

All 12 questions with solutions

• Match List-I with List-II. List-I - List-II; (A) E=h u - (I) de Broglie wavelength; (B) Diffraction and inter… NEET 2026
• A photon and an electron, each of 20 eV energy, move in free space. The ratio of the linear momentum of the e… NEET Re-exam 2026
• A photon and an electron (mass m) have the same energy E. The ratio (λₚₕₒₜₒₙ)/(λ_electron) of their de Brogli… NEET 2025
• The graph which shows the variation of 1/(λ²) with the kinetic energy E of a free particle is (λ is the de Br… NEET 2024
• The graph which shows the variation of the de Broglie wavelength λ of a particle with its associated momentum… NEET 2022
• An electron of mass m and a photon have the same energy E. The ratio of the de Broglie wavelength of the elec… NEET 2016 Phase-I
• Electrons of mass m with de Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength… NEET 2016 Phase-II
• Which of the following figures represents the variation of particle momentum p with the associated de Broglie… AIPMT 2015
• Light of wavelength 500 nm is incident on a metal with work function 2.28 eV. The de Broglie wavelength of th… AIPMT 2015
• The wavelength λₑ of an electron and λₚ of a photon of the same energy E are related by: NEET 2013
• If we consider electrons and photons of the same wavelength, then they will have the same: AIPMT 1995
• The de Broglie wave corresponding to a particle of mass m and velocity v has a wavelength associated with it… AIPMT 1989