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De Broglie Wavelength Questions

Practice 14 De Broglie Wavelength questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

๐Ÿ“š
14
Total Questions
๐ŸŸข
2
Easy
๐ŸŸก
9
Medium
๐Ÿ”ด
3
Hard
Practice by Exam:Physics(11)PHYSICS(1)CHEMISTRY(1)Chemistry(1)

About De-Broglie Wavelength โ€” practice questions, PYQs & concepts

De-Broglie Wavelength is a frequently-tested topic on Physics, PHYSICS, CHEMISTRY. ExamTest.live currently lists 14 De-Broglie Wavelength questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year โ€” every answer key is free, no sign-up required.

De-Broglie Wavelength weight in competitive exams

Across our De-Broglie Wavelength question bank, the largest sources are Physics (11), PHYSICS (1), CHEMISTRY (1) and Chemistry (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 2 easy De-Broglie Wavelength questions are available โ€” build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right โ€” the explanation often surfaces a faster approach you can reuse.

All De Broglie Wavelength Questions(1โ€“14 of 14)

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Q1mediummcqPhysicsNEET (UG) 20172026
0% accuracy
The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature (Kelvin) and mass , is:
Q2mediummcqPhysicsNEET (UG) 20182026
An electron of mass with an initial velocity () enters an electric field () at . If is its de-Broglie wavelength initially, then its de-Broglie wavelength at time is:
Q3mediummcqPHYSICSNEET 20192026
A proton and an particle are accelerated from rest to the same energy. The de-Broglie wavelength and are in the ratio:
Q4mediummcqCHEMISTRYNEET 20192026
In a hydrogen atom, what is the de-Broglie wavelength of an electron in the second Bohr orbit? [Given that Bohr radius ]
Q5hardmcqPhysicsNEET 20212026
An electromagnetic wave of wavelength is incident on a photosensitive surface of negligible work function. If mass is of photoelectron emitted from the surface has de-Broglie wavelength , then:
Q6mediummcqPhysicsNEET 20222026
The graph which shows the variation of the de Broglie wavelength () of a particle and its associated momentum () is:
image
Q7easymcqPhysicsAIEEE2026
If the kinetic energy of a free electron doubles. Its de Broglie wavelength changes by the factor:
Q8mediummcqPhysicsAIEEE2026
image
Electrons accelerated by potential are diffracted from a crystal. If and , should be about ():
Q9mediummcqChemistryAIEEE 20092026
Calculate the wavelength (in nanometer) associated with a proton moving at . (Mass of proton and ):
Q10mediummcqPhysicsPhysics
3% accuracy
De-Broglie wavelength of an electron orbiting in the state of hydrogen atom is close to (Given Bohr radius ):
Q11hardmcqPhysicsPhysics
0% accuracy
A photon and an electron (mass ) have the same energy . The ratio of their de-Broglie wavelengths is ( is the speed of light):
Q12mediummcqPhysicsPhysics
A particle of mass has the same wavelength as an electron moving with a velocity of . The velocity of the particle is ( ):
Q13easymcqPhysicsPhysics
If the kinetic energy of the particle is increased to times its previous value, the percentage change in the de-Broglie wavelength of the particle is:
Q14hardmcqPhysicsPhysics
Light of wavelength is incident on a metal with work function . The de Broglie wavelength of the emitted electron is:

Frequently Asked Questions

How many De Broglie Wavelength questions are on ExamTest.live?โ–ผ
We have 14 De Broglie Wavelength questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are De Broglie Wavelength MCQs free?โ–ผ
Yes. All De Broglie Wavelength questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include De Broglie Wavelength questions?โ–ผ
De Broglie Wavelength questions are commonly asked in Physics, PHYSICS, CHEMISTRY, Chemistry. You can filter by exam using the links above.
How do I practice De Broglie Wavelength questions effectively?โ–ผ
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.