QJEEM23Pha11a: JEE Main 2023 Physics - Class 12 JEEM23Pha11a Solution: If the two metals and are exposed to radiation of wavelength .…

Question

Verified Solution • 2025–26 Session moderate

If the two metals

\mathrm{A}

and

\mathrm{B}

are exposed to radiation of wavelength

350 \mathrm{~nm}

. The work functions of metals

\mathrm{A}

and

\mathrm{B}

are

4.8 \mathrm{eV}

and

2.2 \mathrm{eV}

. Then choose the correct option.

Accepted Answer

\phi=\frac{h c}{\lambda}=\frac{1240}{350} \mathrm{eV}=3.54 \mathrm{eV}

\therefore

Only metal B will emit photoelectron.

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