Question

1
have
A proton a neutron, an election and a particle
Then their
de Broglie wavelength compare as
same energy​

Answer 1

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12th

Physics

Dual Nature of Radiation and Matter

Wave Nature of Matter

A proton, a neutron, an ele...

PHYSICS

A proton, a neutron, an electron and an α-particle have same energy. Then their de Broglie wavelengths compare as :

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ANSWER

Kinetic energy of particle, K=

2

1

mv

2

ormv=

2mK

de Broglie wavelength, λ=

mv

h

=

2mK

h

For the given value of K,λα

m

1

∴λ

p

:λ

n

:λ

e

:λ

α

=

m

p

1

:

m

n

1

:

m

e

1

:

m

α

1

Since m

p

=m

n

,henceλ

p

=λ

n

As m

α

>m

p

,thereforeλ

alpha

<λ

p

As m

e

<m

n

,thereforeλ

n

<λ

n

Hence λ

alpha

<λ

p

=λ

n

<λ

e