Assertion : The ionising power of beta-partic | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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

Vedclass · Accepted Answer

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

Vedclass · Answer

(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.

Similar Questions

$A$ radioactive decay chain starts from $_{93}Np^{237}$ and produces $_{90}Th^{229}$ by successive emissions. The emitted particles can be:

Three $\alpha$-particles and one $\beta$-particle decay take place in series from an isotope $_{88}Ra^{238}$. Finally,the isotope obtained will be:

$A$ free neutron decays spontaneously into:

Assertion: Radioactive nuclei emit $\beta^-$ particles.
Reason: Electrons exist inside the nucleus.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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.