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Statement-1: A nucleus having energy $E_{1}$ decays by $β^{-}$ emission to a daughter nucleus having energy $E_{2}$ but the $β^{-}$ rays are emitted with a continuous energy spectrum having end point energy $E_{1} - E_{2}$ .
Statement-2: To conserve energy and momentum in $β$ - decay, at least three particles must take part in transformation.

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Statement-1 is correct, Statement-2 is correct

Statement-1 is correct, Statement-2 is correct and Statement-2 is not the correct explanation of Statement-1.

Statement-1 and Statement-2 both are correct and Statement-2 is the correct explanation of Statement-1.

Statement-1 correct but Statement-2 is not correct

answer is A.

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