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Dual Nature of Radiation question

2004 · Shift 0 · Q120

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JEE Main
Physics
Dual Nature of Radiation
2004 · Shift 0 · Q120

Dual Nature of Radiation question

2004 · Shift 0 · Q120

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1

The work function of a substance is

4.0eV.

The longest wavelength of light that can cause photo-electron emission from this substance is approximately.

A
$310nm$
B
$400nm$
C
$540nm$
D
$220nm$

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