Dual Nature of Matter

Statement I- When the wavelength of incident radiation in a photoelectric experiment is decreased, then the stopping potential will decrease. Statement II- In photoelectric effect, if the intensity of light is doubled,…

A student plots two different graphs using the same photoelectric experiment data. 1. Maximum kinetic energy ($K_{max}$) against frequency ($\nu$) 2. Stopping potential ($V_o$) against frequency ($\nu$) Let the slope of…

Let $E_e$ and $E_p$ represent kinetic energy of electron and photon respectively. If de-Broglie wavelength $\lambda_p$ of a photon is four times the de-Broglie wavelenght $\lambda_e$ of an electron, the…

In a photoelectric cell, for the incident radiation of wavelength $\lambda$, the fastest electron has speed 'v'. If the wavelength of incident radiation is changed to $\dfrac{\lambda}{3}$, the speed of the fastest…

If the photoelectric work function of a metal is '$\phi$' and the frequency of incident light is '$\nu$', there is no emission of photoelectrons if

A photon of energy 8 eV is incident on a metal surface of work function 3.75 eV. The stopping potential of the metal is

The wavelength $\lambda_e$ of an electron and $\lambda_P$ of a photon of same energy E are related as

A particle is dropped from a height '$y$'. The de-Broglie wavelength of the particle as a function of height is

The de-Broglie wavelength of the free electron is '$\lambda$' and has a kinetic energy $E_k$. If the kinetic energy of the free electron is made double, the new de-Broglie wavelength is '$\lambda_1$'. If $\lambda_1 =…

Light of frequency $4\nu_0$ is incident on the metal of threshold frequency $\nu_0$. The maximum kinetic energy of the emitted photoelectron is (h = Planck's constant)

An electron and positron are accelerated from rest to the same kinetic energy. The ratio of their de Broglie wavelengths is

A light of wavelength $\lambda$ $(\lambda < \lambda_0)$ falls on a metal surface. The momentum of the fastest moving electron is $p$. In order to have the momentum of an electron equal to $2p$, the required wavelength…