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Dual Nature of Radiation question

2025 · 23 Jan · Shift 2 · Q59

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Dual Nature of Radiation
2025 · 23 Jan · Shift 2 · Q59

Dual Nature of Radiation question

2025 · 23 Jan · Shift 2 · Q59

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1

In photoelectric effect an em-wave is incident on a metal surface and electrons are ejected from the surface. If the work function of the metal is 2.14 eV and stopping potential is 2 V , what is the wavelength of the em-wave? (Given

\mathrm{hc}=1242 \mathrm{eVnm}

where h is the Planck's constant and c is the speed of light in vaccum.)

A
400 nm
B
600 nm
C
300 nm
D
200 nm

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