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Assertion : At rest, radium is decayed i...

Assertion : At rest, radium is decayed into Radon and an `alpha`- particle. They both moves back to back of each other.
Reason : Splitting of radioactive particle is based on conservation of linear momentum.

A

a. If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

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