EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 32 - Dual Nature of Matter and Radiation>KEAM 2020>Q 8

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IMPORTANT

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The de Broglie wavelength of the matter wave associated with an object dropped from a height $x$ , when it reaches the ground-is proportional to

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Important Questions on Dual Nature of Matter and Radiation

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KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 32 - Dual Nature of Matter and Radiation>KEAM 2018>Q 9

Two particles

A

and

B

of same mass have their de-Broglie wavelengths in the ratio

X_{A} : X_{B} = K : 1 .

Their potential energies

U_{A} : U_{B} = 1 : K^{2} .

The ratio of their total energies

E_{A} : E_{B}

is

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IMPORTANT

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

The de-Broglie wavelength

λ_{n}

of the electron in the

n^{t h}

orbit of hydrogen atom is

EASY

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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