The photoelectric threshold for a certain metal surface is 330 mathringA. What is the maximum kinetic energy of the photoelectrons emitted, if radiations of wavelength 1100 mathringA are used ?

Question

The photoelectric threshold for a certain metal surface is 330 mathringA. What is the maximum kinetic energy of the photoelectrons emitted, if radiations of wavelength 1100 mathringA are used ? (A) 1 eV (B) 2 eV (C) 7.5 eV (D) No electron is emitted

Tardigrade Admin · Accepted Answer

Since λ incident is greater than threshold wavelength. No electron will be ejected.

Q. The photoelectric threshold for a certain metal surface is $330 \overset{˚}{A}$ . What is the maximum kinetic energy of the photoelectrons emitted, if radiations of wavelength $1100 \overset{˚}{A}$ are used ?

1 eV

2 eV

7.5 eV

No electron is emitted

Since $λ$ incident is greater than threshold wavelength. No electron will be ejected.

Q. The photoelectric threshold for a certain metal surface is 330A˚. What is the maximum kinetic energy of the photoelectrons emitted, if radiations of wavelength 1100A˚ are used ?