Question 119: Dual Nature of Matter and Radiation

Question

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

$$
\phi=\frac{h c}{\lambda}=\frac{1240}{350} \mathrm{eV}=3.54 \mathrm{eV}
$$
$	herefore$ Only metal B will emit photoelectron.

Answer

Metal B will not emit photo-electrons

Answer

Both metals $\mathrm{A}$ and $\mathrm{B}$ will not emit photo-electrons

Answer

Metal A will not emit photo-electrons

Answer

Both metals A and B will emit photo-electrons

Dual Nature of Matter and Radiation

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.

Choose the correct answer: