The difference between threshold wavelengths for two metal surfaces A and B having work function \phi_{ {\A}}=9 {\eV} and \phi_{ {\B}}=4.5 {\eV} in {\nm} is: \{ Given, hc =1242 {\eV} {\nm}\} [13-Apr-2023 shift 1]

JEE Mains 13-Apr-2023 Shift 1 Solved Paper

Section: Physics

Question : 48 of 90

Marks: +1, -0

The difference between threshold wavelengths for two metal surfaces A and B having work function φA=9‌eV and φB=4.5‌eV in nm is:
{ Given, hc =1242‌eV‌nm}

[13-Apr-2023 shift 1]

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