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NEET 2011

Exam: NEET
Year: 2011
Subject: Physics
Chapter: Dual Nature of Matter

NEET 2011 · Physics · Dual Nature of Matter

In photoelectric emission process from a metal of work function 1.8...

In photoelectric emission process from a metal of work function

1.8 \mathrm{eV}

, the kinetic energy of most energetic electrons is

0.5 \mathrm{eV}

. The corresponding stopping potential is

Options

A $1.3 \mathrm{~V}$
B $0.5 \mathrm{~V}$
C $2.3 \mathrm{~V}$
D $1.8 \mathrm{~V}$

Correct answer

B. $0.5 \mathrm{~V}$

Step-by-step solution

Stoping potential = Maximum KE

\mathrm{eV}=\mathrm{KE}_{\max }

So, option (b) is correct.

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