JEE Main 12 Jan 2019 Shift 2 Solved Paper

Section: Physics

Question : 26 of 90

Marks: +1, -0

An alpha-particle of mass m suffers 1-dimensional elastic coolision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, 64% of its initial kinetic energy. The mass of the nucleus is :-

[12 Jan 2019 Shift 2]

4 m
3.5 m
2 m
1.5 m

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