Assertion : The ionising power of beta-partic | vedclass

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(A) The ionising power of a particle depends on its charge and its velocity. $\alpha$-particles are heavy and move relatively slowly,leading to high i

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The ionising power of a particle depends on its charge and its velocity. $\alpha$-particles are heavy and move relatively slowly,leading to high interaction with matter and high ionising power.$\beta$-particles are much lighter (electrons) and travel at much higher speeds,resulting in lower interaction time with atoms and thus lower ionising power.Because $\beta$-particles interact less frequently with the atoms of the medium,they lose energy more slowly,which gives them a much higher penetrating power compared to $\alpha$-particles.While the mass difference is a factor,the primary reason for the difference in ionising and penetrating power is the combination of mass,charge,and velocity. Therefore,both statements are correct,and the mass difference is a fundamental reason for the observed physical properties.

Assertion : The ionising power of $\beta$-particle is less compared to $\alpha$-particles but their penetrating power is more.
Reason : The mass of $\beta$-particle is less than the mass of $\alpha$-particles.

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Assertion : The ionising power of $\beta$-particle is less compared to $\alpha$-particles but their penetrating power is more.Reason : The mass of $\beta$-particle is less than the mass of $\alpha$-particles.