Dual Nature of Matter and Radiation: JEE Main 2022 Physics question

JEE Main 2022 · 25 Jul, Morning shift · Q6650

JEE Main 202225 Jul, Morning shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002

A metal exposed to light of wavelength

800 \mathrm{~nm}

and and emits photoelectrons with a certain kinetic energy. The maximum kinetic energy of photo-electron doubles when light of wavelength

500 \mathrm{~nm}

is used. The workfunction of the metal is : (Take hc

=1230 \,\mathrm{eV}-\mathrm{nm}

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JEE Main 2022 Dual Nature of Matter and Radiation Question with Solution (25 Jul Morning shift, Q6650) | JEE Arc

JEE Main 2022 · 25 Jul, Morning shift · Q6650

JEE Main 202225 Jul, Morning shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002

A metal exposed to light of wavelength

800 \mathrm{~nm}

and and emits photoelectrons with a certain kinetic energy. The maximum kinetic energy of photo-electron doubles when light of wavelength

500 \mathrm{~nm}

is used. The workfunction of the metal is : (Take hc

=1230 \,\mathrm{eV}-\mathrm{nm}