30 JEE Main 2021 Dual Nature of Matter previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 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.
An electron of mass m e and a proton of mass m P are accelerated through the same potential difference. The ratio of th…
An electron of mass m and a photon have same energy E . The ratio of wavelength of electron to that of photon is : ( c…
A certain metallic surface is illuminated by monochromatic radiation of wavelength λ. The stopping potential for photoe…
An electron moving with speed v and a photon moving with speed c , have the same D-Broglie wavelength. The ratio of the…
Two stream of photons, possessing energies equal to twice and ten times the work function of metal are incident on the…
A light beam of wavelength 500   nm is incident on a metal having work function of 1 . 25   eV , placed in a…
A particle of mass 9 . 1 × 10 - 31   kg travels in a medium with a speed of 10 6   m   s - 1 and a…
An oil drop of the radius 2   mm with a density 3   g cm - 3 is held stationary under a constant electric fie…
The stopping potential in the context of photoelectric effect depends on the following property of incident electromagn…
A moving proton and electron have the same de-Broglie wavelength. If K and P denote the K . E . and momentum respective…
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