A photon collides with a stationary hydrogen atom in ground state inelastically. Energy of the colliding photon is $10.2 \ eV$. After a time interval of the order of micro second another photon collides with same hydrogen atom inelastically with an energy of $15 \ eV$. What will be observed by the detector
A photon collides with a stationary hydrogen atom in ground state inelastically. Energy of the colliding photon is $10.2 \ eV$. After a time interval of the order of micro second another photon collides with same hydrogen atom inelastically with an energy of $15 \ eV$. What will be observed by the detector
- [IIT 2005]
- A
$2$ photon of energy $10.2\ eV$
- B
$2$ photon of energy of $1.4\ eV$
- C
One photon of energy $10.2 \ eV$ and an electron of energy $1.4\ eV$
- D
One photon of energy $10.2\ eV$ and another photon of $1.4 \ eV$
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