Home
Class 12
PHYSICS
An hydrogen atom in its ground state abs...

An hydrogen atom in its ground state absorbs 10.2 eV of energy. The orbital angular momentum is increased by…….js.

A

`1.05 times 10^-34`

B

`3.16 times 10^-34`

C

`2.11 times 10^-34`

D

`4.22 times 10^-34`

Text Solution

Verified by Experts

The correct Answer is:
A
`E=-13.6/n^2-(13.6/1^2)`
`10.2=13.6-13.6/n^2`
`therefore 13.6/n^2=13.6-10.2`
`therefore 13.6/n^2=3.4`
`therefore n^2=13.6/3.4`
`therefore n^2=4`
`therefore n=2`
Angular momentum
`=(nh)/(2pi)`
`=((1)times6.625 times 10^-34)/(2 times 3.14)`
`=1.0549 times 10^-34`
`approx 1.05 times 10^-34 Js`
Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-A|10 Videos

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-B|8 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)|142 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos

Similar Questions

Explore conceptually related problems

The energy of hydrogen atom in its ground state is -13.6 eV . The energy of the level corresponding to the quantum number n = 5 is

The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He+ ion in the first excited state will be .....

The ionization energy of the electron in the hydrogen atom in its ground state is 13.6 eV. The atoms are excited to higher energy levels to emit radiation of 6 wavelengths. During which of the following transitions will the maximum wavelength radiation be emitted ?

When a hydrogen atom is excited from ground state to first excited state then

When a hydrogen atom is excited from ground state to first excited state then

A hydrogen atom absorbs photon of energy 12.1 eV in ground state, then the change in angular momentum will be ..... Js.

The atom of hydrogen absorbs 12.75 eV of energy in ground state. Then what will be the change in orbital angular momentum of the electron in it.

Energy of H-atom in the ground state is -13.6eV . Hence energy in the second excited state is

The energy of an electron in hydrogen atom is -3.4 eV, then its angular momentum is ......