The threshold wavelength of a photosensitive material is equal to the frequency of {\H}_\alpha line of hydrogen. If a photon whose frequency equal to the frequency of {\H}_\beta line of hydrogen is incident on this photosensitive material, the maximum kinetic energy of the emitted photoelectrons is ( {\R} - Rydberg's constant, {\h} - Planck's constant and {\c} - speed of light in vacuum)

AP EAPCET 18th May 2023 Shift 2 Solved Paper

Section: Physics

Question : 115 of 160

Marks: +1, -0

The threshold wavelength of a photosensitive material is equal to the frequency of Hα line of hydrogen. If a photon whose frequency equal to the frequency of Hβ line of hydrogen is incident on this photosensitive material, the maximum kinetic energy of the emitted photoelectrons is
( R - Rydberg's constant, h - Planck's constant and c - speed of light in vacuum)

Rhc
‌
5‌Rhc
144
‌
7‌Rhc
144
‌
Rhc
36

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