The surface of a metal is illuminated by the light of wavelength 400 nm. The kinetic…
Chemistry · NEET · NTA Exams — Structure of Atom
The surface of a metal is illuminated by the light of wavelength 400 nm. The kinetic energy of the ejected photo-electrons was found to be 1.68 eV. The work function of the metal is (hc = 1240 eV nm)
- 3.09 eV
- 1.42 eV
- 1.51 eV
- 1.68 eV
Answer
(C) 1.51 eV
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A photoelectric surface is illuminated successively by monochromatic light of wavelength and 2 . If the…
- The work function of a metallic surface is 5.01 eV. Photoelectrons are emitted when light of wavelength 2000…
- The kinetic energy of most energetic electrons emitted from a metallic surface is doubled when the wavelength…
- A beam of ultraviolet light of wavelength 300 nm and intensity 1.0 watt/m 2 falls on the surface of a photo…
- The ground state energy of Hydrogen atom is — 13.6 eV. When its electron is in the first excited state, its…
- In photoelectric effect, the number of electrons ejected per second is:
- The maximum velocity of an electron emitted by light of wavelength (λ) incident on the surface of a metal of…
- If the atom 257 Fm follows Bohr's model and the radius of 257 Fm is (n) times the Bohr radius, then the value…
More Structure of Atom questions · Browse all practice questions