EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 32 - Dual Nature of Matter and Radiation>KEAM 2018>Q 10

EASY

KEAM

IMPORTANT

Earn 100

The de-Broglie wavelength $λ_{n}$ of the electron in the $n^{t h}$ orbit of hydrogen atom is

50% studentsanswered this correctly

Important Questions on Dual Nature of Matter and Radiation

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 32 - Dual Nature of Matter and Radiation>KEAM 2018>Q 11

The mean momentum of a nucleon inside a nucleus with mass number

A

varies as

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 32 - Dual Nature of Matter and Radiation>KEAM 2018>Q 12

Two electrons in two hydrogen-like atoms

A

and

B

have their total energies

E_{A}

and

E_{B}

in the ratio

E_{A} : E_{B} = 1 : 2

. Their potential energies

U_{A}

and

U_{B}

are in the ratio

U_{A} : U_{B} = 1 : 2

. If

λ_{A}

and

λ_{B}

are their de-Broglie wavelengths, then

λ_{A} : λ_{B}

is