Sarthaks Test
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Consider aiming a beam of free electrons towards free protons. When they scatter, an electron and a proton cannot combine to produce a H-atom,

(a) because of energy conservation.

(b) without simultaneously releasing energy in the from of radiation.

(c) because of momentum conservation.

(d) because of angular momentum conservation.

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(a), (b)

(a) because of energy conservation. 
(b) without simultaneously releasing energy in the from of radiation. 

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