15 JEE Main 2020 Dual Nature of Matter previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the Dual Nature of Matter chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Dual Nature of Matter chapter hub.
Given figure shows few data points in a photo-electric effect experiment for a certain metal. The minimum energy for ej…
An electron (mass m ) with initial velocity v → = v 0 i ^ + v 0 j ^ is in an electric filed E → = - E 0 k ^…
A particle moving with kinetic energy E has de Broglie wavelength λ . If energy Δ E is added to its energy, t…
An electron (of mass m ) and a photon have the same energy E in the range of a few e V . The ratio of the de-Broglie wa…
In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is sho…
A beam of electrons of energy E scatters from a target having atomic spacing of 1   Å . The first maximum in…
When photon of energy 4.0 e V strikes the surface of a metal A , the ejected photoelectrons have maximum kinetic energy…
An electron, a doubly ionized helium ion (He⁺⁺) and proton are having the same kinetic energy. The relation between the…
The surface of a metal is illuminated alternately with photons of energies E 1 = 4   eV and E 2 = 2 . 5   eV…
A beam of electromagnetic radiation of intensity 6.4 × 10 − 5 W / cm 2 is comprised of wavelength, λ =…
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