Dual nature of matter Questions

Photon is quantum of radiation with energy E = hν where ν is frequency and h is Planck's constant. The dimensions of h are the same as that of :

When a light of a given wavelength falls on a metallic surface the stopping potential for photoelectrons is 3.2 V. If a second light having wavelength twice of first light is used, the stopping potential drops to 0.7 V. The wavelength of first light

When photons of energy 4.25 eV strike the surface of a metal A, the ejected photoelectrons have maximum kinetic energy TA eV and de Broglie wavelength λA. The maximum kinetic energy of photoelectrons liberated from another metal B by photons of energ

If a proton and alpha particle have same de-Broglie wavelength, then ratio of their respective linear momentum is

A light radiation of photon energy 4 eV falls on a surface having the work function 2 eV. The stopping potential is

From the figure describing photoelectric effect we may infer correctly that: