Assertion : The ionising power of \( \beta \)-particle is \( \mathrm{P} \) less compared to \( \...

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Assertion : The ionising power of \( \beta \)-particle is
\( \mathrm{P} \) less compared to \( \alpha- \) particles but their penetrating

W power is more.
Reason : The mass of \( \beta \)-particle is less than the mass of \( \alpha \)-particle.
(1) A
(2) B
(3) C
(4) D
(A) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
Both assertion and reason are explanation of the assertion.
(C) Assertion is correct, but reason is wrong statement.
(D) Assertion is wrong, but reason is correct statement.
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