A source emits photons of energy 5 eV which are incident on a...

A source emits photons of energy 5 eV which are incident on a metallic sphere of work function 3.0 eV . The radius of the sphere is

\mathrm{r}=8 \times 10^{-3} \mathrm{~m}

. It is observed that after some time emission of photoelectrons from the metallic sphere is stopped. Charge on the sphere when the photoemission stops is.

Options

A $1.77 \times 10^{-16} \mathrm{C}$
B $1.77 \times 10^{-12} \mathrm{C}$
C $1.11 \times 10^{-12} \mathrm{C}$
D $1.11 \times 10^{-10} \mathrm{C}$

Correct answer

B. $1.77 \times 10^{-12} \mathrm{C}$

Step-by-step solution

No Solution

Practice Dual Nature of Matter on Quantrex Academy →

More from Dual Nature of Matter

Ultraviolet light of wavelength 300 nm and intensity 1 ~W / m^2 falls on the surface of a… Olympiad workbook In an X ray tube the electrons are expected to strike the target with a velocity that is… Olympiad workbook Which of the following curves represents spectral distribution of energy of black body… Olympiad workbook The force of attraction between the positively charged nucleus and the electron in a… Olympiad workbook The photoelectric threshold wavelength of tungsten is 230 nm . The energy of electrons… Olympiad workbook The energy of the characteristic X-ray photon in a Coolidge tube comes from Olympiad workbook The maximum wavelength that can ionize a hydrogen atom initially in the ground state is Olympiad workbook The wavelength of the waves associated with a proton and a photon are the same.… Olympiad workbook Full Dual Nature of Matter list All Olympiad workbook PYQs