JEE Mains 25-July-2022 Shift 1 Solved Paper

Section: Physics

Question : 47 of 90

Marks: +1, -0

A metal exposed to light of wavelength 800nm and and emits photoelectrons with a certain kinetic energy. The maximum kinetic energy of photo-electron doubles when light of wavelength 500nm is used. The workfunction of the metal is : (Take hc =1230eV−nm ).

[25-Jul-2022-Shift-1]

1.537eV
2.46eV
0.615eV
1.23eV

Validate

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