: The longest wavelength of incident light that can eject photoelectrons from platinum is 1980 A. If the light of wavelength O 1900 A is incident on platinum. Find the maximum K.E. of emitted photoelectrons and corresponding stopping potential.

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The longest wavelength of incident
light that can eject photoelectrons from
platinum is 1980 A . If the light of wavelength
1900 A is incident on platinum. Find the
maximum K.E. of emitted photoelectrons and
corresponding stopping potential.
Transcribed Image Text:The longest wavelength of incident light that can eject photoelectrons from platinum is 1980 A . If the light of wavelength 1900 A is incident on platinum. Find the maximum K.E. of emitted photoelectrons and corresponding stopping potential.
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