A copper ball of radius $1 \mathrm{~cm}$ and work function $4.47 \mathrm{~eV}$ is irradiated with…

A copper ball of radius $1 \mathrm{~cm}$ and work function $4.47 \mathrm{~eV}$ is irradiated with ultraviolet radiation of wavelength $2500 ~Å$. The effect of irradiation results in the emission of electrons from the ball. Further the ball will acquire charge and due to this there will be a finite value of the potential on the ball. The charge acquired by the ball is :
  1. $5.5 \times 10^{-13} \mathrm{~C}$
  2. $7.5 \times 10^{-13} \mathrm{~C}$
  3. $4.5 \times 10^{-12} \mathrm{~C}$
  4. $2.5 \times 10^{-11} \mathrm{~C}$

Solution

No Solution Available

Asked in: JEE Main 2013 (25 Apr Online)

Practice more Dual Nature of Matter and Radiation questions on Aicharya