The difference between threshold wavelengths for two metal surfaces A and B having work function φ A =9 ~eV and φ B =4 · 5 ~eV in nm is: Given, hc =1242 ~eV nm

Dual Nature of Matter and Radiation: JEE Main 2023 Physics question

JEE Main 2023 · 13 Apr, Morning shift · Q6660

JEE Main 202313 Apr, Morning shiftPhysicsHardDual Nature of Matter and Radiation146× since 2002

The difference between threshold wavelengths for two metal surfaces

\mathrm{A}

and

\mathrm{B}

having work function

\phi_{A}=9 ~\mathrm{eV}

and

\phi_{B}=4 \cdot 5 ~\mathrm{eV}

\mathrm{nm}

is:

\{

Given, hc

=1242 ~\mathrm{eV} \mathrm{nm}\}

JEE Main 2023 Dual Nature of Matter and Radiation Question with Solution (13 Apr Morning shift, Q6660) | JEE Arc

JEE Main 2023 · 13 Apr, Morning shift · Q6660

JEE Main 202313 Apr, Morning shiftPhysicsHardDual Nature of Matter and Radiation146× since 2002

The difference between threshold wavelengths for two metal surfaces

\mathrm{A}

and

\mathrm{B}

having work function

\phi_{A}=9 ~\mathrm{eV}

and

\phi_{B}=4 \cdot 5 ~\mathrm{eV}

\mathrm{nm}

is:

\{

Given, hc

=1242 ~\mathrm{eV} \mathrm{nm}\}