Dual Nature Of Radiation And Matter Questions

31 Practice QuestionsStart Practicing Now

[Medium]In a landmark experiment a beam of low-energy electrons was scattered from a single nickel crystal and showed a sharp intensity peak at a particular a...
[Medium]Identical electrons are accelerated from rest, one through a potential difference of $50\ \text{V}$ and the other through $200\ \text{V}$. What is the...
[Hard]An electron and a proton are observed to have exactly the same de Broglie wavelength as they move through a region. What is the ratio of the kinetic e...
[Medium]A photoemissive metal requires a minimum energy of $3.3\ \text{eV}$ to release an electron from its surface. Below which threshold frequency of incide...
[Medium]A cricket-style practice ball of mass $50\ \text{g}$ is thrown so that it moves with a speed of $20\ \text{m s}^{-1}$ across a field. What is the de B...
[Medium]Ultraviolet light of wavelength $400\ \text{nm}$ illuminates a metal whose work function is $2.0\ \text{eV}$, ejecting electrons from its surface. Wha...
[Easy]Keeping the frequency of incident light fixed above threshold, an experimenter gradually doubles the intensity of the beam falling on a photosensitive...
[Medium]Two different metals are each tested in a photocell, and for both the stopping potential is plotted against the frequency of incident light. What can ...
[Easy]Green light of wavelength $5\times10^{-7}\ \text{m}$ from a laser pointer is incident normally on a small surface. What is the magnitude of the moment...
[Medium]An electron initially at rest is accelerated from rest through a potential difference of $100\ \text{V}$ inside an evacuated tube. What is the de Brog...
[Medium]A proton and an alpha particle, both starting from rest, are accelerated through the same potential difference inside identical fields. What is the ra...
[Medium]Monochromatic radiation of wavelength $248\ \text{nm}$ falls on a photosensitive cathode whose work function is $2.0\ \text{eV}$. What reverse potenti...
[Easy]During a photoelectric experiment the reverse voltage at which the photocurrent just becomes zero is recorded as $1.5\ \text{V}$. What is the maximum ...
[Easy]In a diffraction setup an electron is found to travel with a linear momentum of $3.3\times10^{-24}\ \text{kg m s}^{-1}$. What de Broglie wavelength sh...
[Easy]A sodium vapour lamp emits monochromatic light whose frequency is measured to be $6\times10^{14}\ \text{Hz}$. What is the energy carried by a single p...
[Easy]A clean metal surface used in a photocell has a work function of $2.0\ \text{eV}$ for electron emission. Beyond which longest wavelength of incident l...
[Hard]Work function φ physically represents minimum energy to:...
[Easy]Maximum kinetic energy of emitted electron is given by:...
[Easy]de Broglie wavelength of particle momentum p is:...
[Medium]Non-relativistic electron of kinetic energy K has de Broglie wavelength proportional to:...
[Easy]Light exhibits wave and particle nature evidenced by respectively:...
[Medium]Compton shift increases with scattering angle reaching maximum at:...
[Easy]Photon momentum p (wavelength λ) is:...
[Medium]Electron microscopes achieve higher resolution due to electrons having:...
[Hard]Photon energy E related to frequency f by:...
[Hard]Increasing light intensity (above threshold) primarily increases:...
[Hard]Localization of particle associated with superposition forming:...
[Hard]Davisson-Germer experiment confirmed electron:...
[Medium]If de Broglie wavelength halves, momentum:...
[Easy]Photoelectric emission occurs only if photon frequency exceeds:...
[Hard]Heisenberg uncertainty principle states product of position and momentum uncertainties is at least:...