Question 294: Dual Nature of Matter and Radiation

Question

The graph of stopping potential ' $\mathrm{V}_{\mathrm{s}}$ ' against frequency ' $v$ ' of incident radiation is plotted for two different metals ' X ' and ' Y ' as shown in graph. ' $\phi_x$ ' and ' $\phi_y$ ' are work functions of ' $x$ ' and ' $Y$ ' respectively then

Accepted Answer

$$\begin{aligned}
& 	ext { We know } \
& \phi=h v_0 \quad \Rightarrow \phi \propto v_0 \
& 	ext { Also, } \
& v_0< v_0^{\prime} \quad	ext{... (From graph)}\
	herefore \quad & \phi_x<\phi_y
\end{aligned}$$

Answer

$\phi_x=\phi_y$

Answer

$\phi_x<\phi_y$

Answer

$\phi_x>\phi_y$

Answer

$\phi_x=\phi_y=0$

Dual Nature of Matter and Radiation

The graph of stopping potential ' \mathrm{V}_{\mathrm{s}} ' against frequency ' v ' of incident radiation is plotted for two different metals ' X ' and ' Y ' as shown in graph. ' \phi_x ' and ' \phi_y ' are work functions of ' x ' and ' Y ' respectively then

Choose the correct answer: