Class 12PhysicsDual Nature of Radiation and MatterEinstein's Photoelectric Equation and Energy Quantum of Radiation
MediumThe maximum velocity of an electron emitted by light of wavelength $\lambda$ incident on the surface of a metal of work function $\phi$ is [$h=$ Planck's constant,$m=$ mass of electron and $c=$ speed of light]
- A$\sqrt{\frac{2(h c+\lambda \phi)}{m \lambda}}$
- B$\frac{2(h c-\lambda \phi)}{m}$
- C$\sqrt{\frac{2(h c-\lambda \phi)}{m \lambda}}$
- D$\frac{2(h \lambda-\phi)}{m}$
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DifficultTS EAMCET 2021
View Solution$A$ certain metallic surface is illuminated with monochromatic light of wavelength $\lambda$. The stopping potential for the photoelectric current for this light is $3V_0$. If the same surface is illuminated with light of wavelength $2\lambda$,the stopping potential is $V_0$. The threshold wavelength for this surface for the photoelectric effect is:
MediumAIPMT 2015
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