1.

The mass of an electron 1/1840 part of mass of proton. When they are subjected to a uniform elecric field, they start accelerating(b) If they start from rest and have the same de Brogile wavelength of 1Å then determine the ratio of their kinetic energies.

Answer»

SOLUTION :`lambda_e=h/sqrt(2m_ek_e), lambda_p=h/sqrt(2m_pk_p` SINCE these PARTICLES have same WAVELENGTH `h/sqrt(2m_ek_e)=h/sqrt(2m_pk_p )`
`m_ek_e=m_pk_p `
` k_e/k_p=m_P/m_e=1840`


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