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A photon of wavelength 300nm interacts w...

A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground state. During the interaction, whole energy of the photon is transferred to the electron of the atom. State which possibility is correct, (consider, Plank's constant `=4xx10^(-15)` eVs, velocity of light `=3xx10^(8)ms^(-1)` ionisation energy of hydrogen =13.6 eV)

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A photon of wavelength 300 nm interracts with a stationary hydrogen atom in ground state. During the interaction, whole energy of the photon I transferred to the electron os the atom. State which possibility is correct. (Consider,Planck's constant =4xx10^(-15)eV *s , velocity of light =3xx10^(8)m//s , ionisation energy of hydrogen =13.6 eV.

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A photon of energy 10.2eV collides inelastically with a stationary hydrogen atom in the ground state. After a time interval of the order of a microsecond, another photon collides with energy of 15eV. What will be observed by the detector ?

A photon of energy 10.2eV collides inelastically with a stationary hydrogen atom in the ground state. After a time interval of the order of a microsecond, another photon collides with energy of 15eV. What will be observed by the detector ?