EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2019>Q 1

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IMPORTANT

Earn 100

In Rutherford experiment, for head-on collision of $α -$ particles with a gold nucleus, the impact parameter is

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Important Questions on Atomic Physics

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2021>Q 3

Energy of an electron in the second orbit of hydrogen atom is

E_{2} .

The energy of electron in the third orbit of

H e^{+}

will be

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2018>Q 4

The total energy of an electron revolving in the second orbit of the hydrogen atom is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2018>Q 5

The period of revolution of an electron in the ground state of the hydrogen atom is $T$ . The period of revolution of the electron in the first excited state is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2019>Q 6

Frequency of revolution of an electron revolving in n^th orbit of H-atom is proportional to

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2019>Q 7

A hydrogen atom in ground state absorbs

10.2 e V

of energy. The orbital angular momentum of the electron is increased by

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 31 - Atomic Physics>KCET (UG) 2020>Q 9

Angular momentum of an electron in hydrogen atom is

\frac{3 h}{2 π}

(

h

is the Planck's constant). The K.E. of the electron is