JEE Main 2013 — Dual Nature of Matter Question with Solution
JEE Main 2013 (25 Apr Online)
Question
In an experiment on photoelectric effect, a student plots stopping potential against reciprocal of the wavelength of the incident light for two different metals and . These are shown in the figure.
Looking at the graphs, you can most appropriately say that:
Looking at the graphs, you can most appropriately say that:
Choose an option
Show full solutionCorrect option: D
Correct answer
DStudents data is not correct
Step-by-step explanation
$\begin{aligned}
& \frac{\mathrm{hc}}{\lambda}-\phi=\mathrm{eV}_0 \\
& \mathrm{v}_0=\frac{\mathrm{hc}}{\mathrm{e} \lambda}-\frac{\phi}{\mathrm{e}}
\end{aligned}$
As the value of (increasing and decreasing) is not specified hence we cannot say that which metal has comparatively greater or lesser work function .
As the value of (increasing and decreasing) is not specified hence we cannot say that which metal has comparatively greater or lesser work function .
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This is a previous-year question from JEE Main 2013, covering the Dual Nature of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.