Question 350: Dual Nature of Matter and Radiation

Question

The graph of kinetic energy against the frequency $$v$$ of incident light is as shown in the figure. The slope of the graph and intercept on $$X$$-axis respectively are

Accepted Answer

For photoelectric effect,
$$(\mathrm{KE})_{\max }=h 
u-\phi_0$$
where, $$\phi_0$$ is the work function of metal.
On comparing the Eq. (i) with straight line equation $$y=m x+c$$, we get
Slope, $$m=h$$ and intercept on $$y, c=-\phi_0$$ and $$\phi_0=h v_0$$
where, $$v_0$$ is threshold frequency.
So, for the graph of kinetic energy (KE) against the frequency ($$v$$).
Slope $$=$$ Planck's constant
and intercept on $$X$$-axis = threshold frequency

Answer

maximum KE threshold frequency

Answer

Planck's constant, threshold frequency

Answer

Planck's constant, work function

Answer

work function, maximum KE

Dual Nature of Matter and Radiation

The graph of kinetic energy against the frequency $v of incident light is as shown in the figure. The slope of the graph and intercept on X$-axis respectively are

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