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If the deBroglie wavelenght of an electr...

If the deBroglie wavelenght of an electron is equal to 10^-3 times the wavelenght of a photon of frequency `6xx 10 ^14`Hz ,then the calculate speed of electrone. Speed of light `=3 xx 10^8 m//s `
Planck's constant `=6.63 xx 10 ^(-34)` J s
Mass of electron `=9.1 xx 10 ^(-31)` kg

A

`1.1 xx 10 ^6 m//s `

B

`1.7 xx 10 ^6 m//s `

C

`1.8 xx 10 ^6 m//s `

D

`1.45 xx 10 ^6 m//s `

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If the deBroglie wavelenght of an electron is equal to 10^-3 times the wavelength of a photon of frequency 6xx 10 ^4 Hz ,then the speed of electron is equal to (Speed of light =3 xx 10^8 m//s Planck's constant =6.63 xx 10 ^(-34) J s Mass of electron =9.1 xx 10 ^(-31) kg

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what is the work fuction of the metal if the light of wavelength 4000Å generates photoelectrons of velocity 6xx10^(5) ms^(-1) from it ? (Mass o felectron =9xx10^(-31) kg Velocity of light =3xx10^(8)ms^(-1) Planck's constant =6.626xx10^(-34)Js Charge of electron =1.6xx10^(-19)jeV^(-1)

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The kinetic energy of an electron is 4.55 xx 10^(-25) J .The mass of electron is 9.1 xx 10^(-34) kg . Calculate velocity of the electron.

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Calculate the wave length of an electron of mass 9.1 xx 10^(-31) kg , moving with a velocity of 2.05 xx 10^(7)ms^(-1) .

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