The kinetic energy of most energetic electrons emitted from a metallic surface is doubled…
Chemistry · NEET · NTA Exams — Structure of Atom
The kinetic energy of most energetic electrons emitted from a metallic surface is doubled when the wavelength (λ) of the incident radiation is changed from 400 nm to 310 nm. The work function of the metal is
- 0.9 eV
- 1.7 eV
- 2.2 eV
- 4.4 eV
Answer
(C) 2.2 eV
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- Which one of the following is not different for an atom and its corresponding ion?
- For emission line of atomic hydrogen from n i = 8 to n f =n, the plot of wave number ( v ) against ( 1 n^ 2 )…
- An element with atomic number 9 emits K_ n X-rays of wavelength λ. The atomic number of the element which…
- The quantum numbers + 1 2 and - 1 2 for the electron spin represent:
- The de-Broglie's wavelength of a proton (charge = 1.6 x 10 -19 C, mass = 1.6 x 10 -27 kg) accelerated through…
- The work function of a photoelectric material is 3.3 eV. Its threshold frequency will be:
- The retarding potential necessary to stop the emission of photo-electrons, when a target material of work…
- A light of wavelength 280 nm is used in an experiment on photoelectric surface of lithium ( C =2.5 eV ) as…
More Structure of Atom questions · Browse all practice questions