The photoelectric threshold for a certain metal surface is 360   Å . If the metal surface is…

The photoelectric threshold for a certain metal surface is 360 Å. If the metal surface is irradiated by a wavelength of 1100 Å, the kinetic energy of the emitted photoelectrons is

  1. 1.1 eV
  2. 2 eV
  3. 2.3 eV
  4. 0

Solution

Given that 

Wavelength of incident light λ=1100 Å

Threshold wavelength λ=360 Å

Here λ>λth,  so photo electric effect not produce

Asked in: AP EAMCET 2020 (23 Sep Shift 1)

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