Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Atoms and Nuclei question

2023 · 10 Apr · Shift 1 · Q60
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Atoms and Nuclei
  5. /2023 · 10 Apr · Shift 1 · Q60

Atoms and Nuclei question

2023 · 10 Apr · Shift 1 · Q60

JEE MainPhysicsAtoms and NucleiMCQ+4 / −1
The angular momentum for the electron in Bohr's orbit is L. If the electron is assumed to revolve in second orbit of hydrogen atom, then the change in angular momentum will be
  1. A
    L
  2. B
    L2\frac{L}{2}2L​
  3. C
    zero
  4. D
    2 L
PreviousNext

More from Atoms and Nuclei

  • If 917 Ao​ be the lowest wavelength of Lyman series then the lowest wavelength of Balmer series will be ​Ao​.2023 · Numerical
  • The energy of He+ ion in its first excited state is, (The ground state energy for the Hydrogen atom is −13.6 eV) :2023 · MCQ
  • A nucleus disintegrates into two nuclear parts, in such a way that ratio of their nuclear sizes is 1:21/3. Their respective speed have a ratio of n:1. The value of n is ​.2023 · Numerical
  • A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:2023 · MCQ
  • A common example of alpha decay is 92238​U⟶90234​Th+2​He4+Q Given : 92238​U=238.05060 u, 90234​Th=234.04360 u…2023 · Numerical
  • 92238​A→90234​B+24​D+Q In the given nuclear reaction, the approximate amount of energy released will be: [Given, mass of 92238​ A=238.05079×931.5 MeV/c2, mass of 90234​B=234⋅04363×931⋅5 MeV/c2,…2023 · MCQ
  • The radius of 2nd  orbit of He+ of Bohr's model is r1​ and that of fourth orbit of Be3+ is represented as r2​. Now the ratio r1​r2​​ is x:1. The value of x is ​…2023 · Numerical
  • As per given figure A,B and C are the first, second and third excited energy levels of hydrogen atom respectively. If the ratio of the two wavelengths ( i.e. λ2​λ1​​) is 4n7​… Includes diagram2023 · Numerical