When an inert gas is filled in the place vacuum in a photo cell, then
Photo-electric current is decreased
Photo-electric current is increased
Photo-electric current remains the same
Decrease or increase in photo-electric current does not depend upon the gas filled
Find the number of electrons emitted per second by a $24 \,W$ source of monochromatic light of wavelength $6600 \mathring A$, assuming $3 \%$ efficiency for photoelectric effect (take $h=6.6 \times 10^{-34} \,Js$ ) $S$
The momentum of the photon of wavelength $5000\,\mathring A$ will be
Photo-electric effect can be explained by
What is the momentum of a photon having frequency $1.5 \times {10^{13}}Hz$
If the energy of a photon is $10\,eV$, then its momentum is