1.

An a-particle of 5 MeV energy strikes with a nucleus of uranium at stationary at an scattering angle of 180o. The nearest distance upto which a-particle reaches the nucleus will be of the order of                            [IIT 1981; AIEEE 2004]

A.            \[1\,\overset{o}{\mathop{A}}\,\]                                    
B.            \[{{10}^{-10}}cm\]
C.            \[{{10}^{-12}}cm\]
D.            \[{{10}^{-15}}cm\]
Answer» D.            \[{{10}^{-15}}cm\]


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