Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
A metal exposed to light of wavelength 800 nm and emits photoelectrons with a certain kinetic energy. The maximum kinetic energy of photo - electron doubles when light of wavelength 500 nm is used. The work function of the metal is:
(Take hc = 1230 eV-nm)
1
1.537 eV
2
2.46 eV
3
0.615 eV
4
1.23 eV
5
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