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Two electrons starting from rest are accelerated by equal potential difference.A. they will have different kinetic energyB. they will have same linear momentumC. they will same linear momentum de broglie wavelengthD. they may produce x-rays of same minimum wavelength when they strike different targets |
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Answer» Correct Answer - D kinetic energy of an electron is given by `k=1/2 mv^(2) =eV =` same for both electron Where V= Speed of electron Linear momentum of two electron may be different, in direction but their magnitude i.e. `mv=sqrt(2mk)` will be same. De-Broglie wavelength is given by `lambda=h/(mv)` =same for both electrons Minimum wavelength of produced x-rays is given by `lambda_("min")=(hc)/(eV)` =same for both electrons |
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