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A photon of energy 10.2eV collides inela...

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

one photon of energy 10.2 eV and an electron having energy 1.4 eV

B

two photons of energy 1.4 eV

C

two photons of energy 10.2 eV

D

one photon of energy 10.2 eV and another photon of 1.4eV

Text Solution

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The correct Answer is:
A
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