EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 27 June 2022 Shift 2>Q 106

EASY

JEE Main

IMPORTANT

Earn 100

Given below are two statements

Statement I: In hydrogen atom, the frequency of radiation emitted when an electron jumps from lower energy orbit $(E_{1})$ to higher energy orbit $(E_{2})$ , is given as $h f = E_{1} - E_{2}$

Statement II: The jumping of electron from higher energy orbit $(E_{2})$ to lower energy orbit $(E_{1})$ is associated with frequency of radiation given as $f = \frac{(E_{2} - E_{1})}{h}$ . This condition is Bohr's frequency condition.

In the light of the above statements, choose the correct answer from the options given below:

71.43% studentsanswered this correctly

Important Questions on Atoms and Nuclei

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 28 June 2022 Shift 1>Q 107

The

Q

-value of a nuclear reaction and kinetic energy of the projectile particle,

K_{p}

are related as

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 29 June 2022 Shift 1>Q 109

The activity of a radioactive material is

2.56 \times 10^{- 3} Ci

. If the half life of the material is

5

days, after how many days the activity will become

2 \times 10^{- 5} Ci

?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 29 June 2022 Shift 1>Q 110

\sqrt{d_{1}}

and

\sqrt{d_{2}}

are the impact parameters corresponding to scattering angles

60 °

and

90 °

respectively, when an

α

particle is approaching a gold nucleus. For

d_{1} = x d_{2}

, the value of

x

will be _____ .

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 29 June 2022 Shift 2>Q 111

In the following nuclear reaction,

D \overset{α}{\to} D_{1} \overset{β^{-}}{\to} D_{2} \overset{α}{\to} D_{3} \overset{γ}{\to} D_{4}

Mass number of

D

is

182

and atomic number is

74

. Mass number and atomic number of

D_{4}

respectively will be

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 25 July 2022 Shift 1>Q 113

The momentum of an electron revolving in

n^{t h}

orbit is given by : (Symbols have their usual meanings)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 25 July 2022 Shift 2>Q 114

Hydrogen atom from excited state comes to the ground by emitting a photon of wavelength $λ$ . The value of principal quantum number $n$ of the excited state will be :

( $R :$ Rydberg constant)