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De Broglie's Hypothesis

Electrons wit...

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Electrons with de Broglie wavelength A are bombardedon a metal target. It is found that photons are emittedfrom the metal target. The minimum wavelength ofemitted photons is \lbrack m mass of electron)

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Q. Electrons with de Broglie wavelength

λ

are bombarded on a metal target. It is found that photons are emitted from the metal target. The minimum wavelength of emitted photons is [m = mass of eletron]

Q. The electron with The electron with de Broglie wavelength

λ

is bombarded on a metal target. Found that photons are emitted through de Broglie wavelength.

Q. When photons of energy

4.25 e V

strike the surface of a metal

A

, the ejected photo-electrons have maximum kinetic energy,

T_{A}

e V

) and de Broglie wavelength

λ_{A}

. The maximum kinetic energy of photoelectrons liberated from another metal

B

by photons of energy

4.70 e V

T_{B} = T_{A} - 1.50 e V

. If the de-Broglie wavelength of these photo-electrons is

λ_{B} = 2 λ_{A}

, then which is not correct?

Q. A gas containing hydrogen-like ions, with atomic number

Z

, emits photons in transition

n + 2 \to n

n = Z

. These photons fall on a metallic plate and eject electrons having minimum de Broglie wavelength

λ

5000 ˚ A

. Find the value of

Z

, if the work function of metal is

4.2 e V

Q. The de-broglie wavelength of an electron and the wavelength of a photon are same. The ratio between the energy of the photon and the momentum of the electron is

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