## Matter Waves MCQ Basic Level

Physics is an important subject in preparation for various Competitive exams.To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Matter Waves. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. An electron and proton have the same de-Broglie wavelength. Then the kinetic energy of the electron is

•  Zero
•   Infinity
•  Equal to the kinetic energy of the proton
•   Greater than the kinetic energy of the proton

Greater than the kinetic energy of the proton

Q2. If the K.E. of an electron, a proton a neutron and an Î± -particle is identical, the maximum de-Broglie wavelength will be for

•  Electron
•  Proton
•  Î± -particle
•  Neutron

Electron

Q3. A particle which has zero rest mass and non-zero energy and momentum must travel with a speed

•  Equal to c, the speed of light in vacuum
•  Greater then c
•  Less then c
•  Tending to infinity

Equal to c, the speed of light in vacuum

Q4. The wavelengths of a photon, an electron and uranium atom are identical. Which of then will have highest energy

•  Photon
•  Electron
•  Uranium nucleus
•  Depends on wavelength and property of particles

Depends on wavelength and property of particles

Q5. If there is an increase in linear dimensions of the object, the associated de-Broglie wavelength

•  Increases
•  Decreases
•   Remains unchanged
•  Depends on the density of object

Remains unchanged

Q6. Matter waves are

•  Electromagnetic waves
•  Longitudinal waves
•  Probability waves
•  Transverse waves

Probability waves

Q7. Two sand grains, one of diameter 0.5 mm and the other of diameter 1.0 mm are moving with the same momentum, then the de-Broglie wavelength of the first is

•  Greater than that of the second
•  Less than that of the second
•  Equal to that of the second
•  Double incomparison to that of the second

Equal to that of the second

Q8. The electron micro-scope works on the principle of

•  Particle theory
•  Matter wave concept
•  Uncertainty
•  All of the above

Matter wave concept

Q9. If the energy of a particle is reduced to half then the percentage increase in the de-Broglie wavelength is about

•  41%
•  50%
•  29%
•  100%

41%

Q10. If the momentum of an electron is changed by Î´ p, then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of the electron will be

•  Î´ p /200
•  Î´ p /199
•  199 Î´ p
•  400 Î´ p

199 Î´ p

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