Electrons accelerated by potential V are diffracted from a crystal. If d = 1 Å and i =…
Physics · JEE Main · NTA Exams — Atoms and Nuclei
Electrons accelerated by potential V are diffracted from a crystal. If d = 1 Å and i = 30°, V should be about
(h = 6.6 × 10–34 J.s, me = 9.1 × 10–31 kg, e = 1.6 × 10–19 C)
(h = 6.6 × 10–34 J.s, me = 9.1 × 10–31 kg, e = 1.6 × 10–19 C)
- 2000 V
- 50 V
- 500 V
- 1000 V
Answer
(B) 50 V
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- If energy released in the fission of one nucleus is 3.2 10^ -11 , then the number of nuclei required per…
- When _ 3 ^ 7 Li nuclei are bombarded by proton, and the resultant nuclei are _ 4 ^ 8 Be , the emitted…
- The energy released by the fission of one uranium atom is 200 MeV. The number of fissions per second required…
- The binding energy per nucleon of deuteron [1 H ^ 2 ] and helium atom (2 He ^ 4 ) is 1.1 MeV and 7 MeV…
- A free neutron decays into a proton but a free proton does not decay into a neutron. This is because
- The binding energy per nucleon for the parent nucleus is E 1 and that for the daughter nuclei is E 2 . Then
- The de Broglie wavelength of a particle of mass m moving with a kinetic energy E is
- The half-life of a radioactive substance is 20 min. The approximate time interval (t 2 – t 1 ) between the…
More Atoms and Nuclei questions · Browse all practice questions