List of top Physics Questions on Dual nature of matter asked in NEET (UG)

Light with an average flux of $20\,\Omega/cm^2$ falls on a non-reflecting surface at normal incidence having surface area $20\,cm^2$. The energy received by the surface during time span of $1\,minute$ is :
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is $1.227 \times 10^{-2}nm$, the potential difference is :
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?
When a metallic surface is illuminated with radiation of wavelength $\lambda$ , the stopping potential is V. If the same surface is illuminated with radiation of wavelength $2 \lambda$, the stopping potential is $\frac{V}{4}$ . The threshold wavelength for the metallic surface is :
Light of wavelength 500 nm is incident on a metal with work function 2.28 eV. The de Broglie wavelength of the emitted electron is
When the energy of the incident radiation is increased by $20 \%, $ the kinetic energy of the photoelectrons emitted from a metal surface increased from 0.5 eV to 0.8 eV. The work function of the metal is
The wavelength $\lambda_e$ of an electron and $\lambda_P$ of a photon of same energy E are related by:
If the momentum of an electron is changed by P, then the de Broglie wavelength associated with it changes by $0.5 \%. $ The initial momentum of electron will be
In photoelectric emission process from a metal of work function $1.8\, eV$, the kinetic energy of most energetic electrons is $0.5\, eV$. The corresponding stopping potential is
When monochromatic radiation of intensity $I$ falls on a metal surface, the number of photoeleetrons and their maximum kinetic energy are $N$ and $T$ respectively. If the intensity of radiation is $2I$ , the number of emitted electrons and their maximum kinetic energy are respectively
In Thomson mass spectrograph $\vec{E}\perp \vec{B} $ then the velocity of electron beam will be
Which one among the following shows particle nature of light?
Which of the following statement is correct?