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Dual Nature of Radiation question

2017 · Shift 2 · Q46

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JEE Advanced
Physics
Dual Nature of Radiation
2017 · Shift 2 · Q46

Dual Nature of Radiation question

2017 · Shift 2 · Q46

JEE AdvancedPhysicsDual Nature of RadiationMCQ+3 / −0.75

A photoelectric material having work-function

{\phi _0}

is illuminated with light of wavelength

\lambda \left( {\lambda \lt {{he} \over {{\phi _0}}}} \right).

The fastest photoelectron has a de-Broglic wavelength

{\lambda _d}.

A change in wavelength of the incident light by

\Delta \lambda

result in a change

\Delta {\lambda _d}

in

{\lambda _d}.

Then the ratio

\Delta {\lambda _d}/\Delta \lambda

is proportional to

A
${\lambda _d}/\lambda$
B
$\lambda _d^2/{\lambda ^2}$
C
$\lambda _d^3/\lambda$
D
$\lambda _d^3/{\lambda ^2}$

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