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Dual Nature of Matter & de Broglie Wavelength questions with solutions
Practice Photoelectric effect and dual nature for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
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- NumericmediumPhotoelectric effect and dual nature
Electrons accelerated from rest through 900 V produce a first-order diffraction maximum from one crystal at a certain Bragg angle. A second crystal has interplanar spacing 1.5 times that of the first crystal. What accelerating voltage should be used with the second crystal so that the first-order diffraction maximum occurs at the same Bragg angle? If the required voltage is N V, find N.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQeasyPhotoelectric effect and dual nature
The ratio of de-Broglie wavelength of an α-particle and a proton accelerated from rest by the same potential is 1/√m. The value of m is:
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JEE Mains29 January 2023Shift 2Evening Shift
Open question & full solution → - NumericmediumPhotoelectric effect and dual nature
A charged particle moves perpendicular to a uniform magnetic field B in a circular path of radius r, and its de Broglie wavelength is λ. Another particle with the same charge magnitude moves in the same magnetic field in a circular path of radius 3r. If the second particle's de Broglie wavelength is λ ÷ N, find N.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature
Electrons in an electron microscope are accelerated through 25 kV. If voltage increases to 100 kV, their de Broglie wavelength will:
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AIPMT Screening 2011NEET Previous Year
Open question & full solution → - NumericmediumPhotoelectric effect and dual nature
A non-relativistic particle initially has kinetic energy K and de Broglie wavelength λ. Its kinetic energy is increased by 44%, while its mass remains unchanged. If the percentage decrease in its de Broglie wavelength is approximately N%, find N to the nearest integer.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature
Which graph gives de Broglie wavelength λ as a function of associated momentum p? [Image]
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NEET 2022AIPMT Cancelled 2015NEET Previous Year
Open question & full solution → - NumericmediumPhotoelectric effect and dual nature
Particle A has mass m and charge magnitude e, while particle B has mass 9m and charge magnitude 4e. Both particles start from rest and are accelerated through the same potential difference. If λ(A) ÷ λ(B) = N, find N.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature
Two identical non-relativistic particles move at right angles to each other and have de Broglie wavelengths λ₁ and λ₂. Find the de Broglie wavelength of each particle in the centre-of-mass frame.
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JEE MainsAdvanced
Open question & full solution → - NumericmediumPhotoelectric effect and dual nature
A non-relativistic particle has a de Broglie wavelength of 0.40 nm. It undergoes an inelastic collision in which it loses 36% of its kinetic energy, but the particle itself is not transformed. If its new de Broglie wavelength is (N ÷ 100) nm, find N.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature
Electron momentum changes by an amount p and its de Broglie wavelength changes by 0.5%. Initial momentum is:
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AIPMT Mains 2012NEET Previous Year
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