Exams › NEET › Physics

α-particles, β-particles and γ-rays are all having same energy. Their penetrating power in a given medium in increasing order will be

1. β, γ, α
2. γ, α, β
3. α, β, γ
4. β, α, γ

Correct answer: α, β, γ

Solution

The penetrating power of radiation depends on its mass and charge. α-particles, being heavy and charged, have the least penetrating power. β-particles, being lighter and less charged, have moderate penetrating power. γ-rays, being uncharged and massless, have the highest penetrating power. Thus, the order is α, β, γ.

Related NEET Physics questions

• Two nuclei have their mass numbers in the ratio of 1 : 3. The ratio of their nuclear densities would be:
• If radius of the 27/13 Al nucleus is taken to be R_Al, then the radius of 125/53 Te nucleus is nearly:
• If the nuclear radius of 27/13 Al is 3.6 Fermi, the approximate nuclear radius of 64/29 Cu in Fermi is:
• The radius of germanium (Ge) nuclide is measured to be twice the radius of 9/4 Be. The number of nucleons in Ge are:
• If the nucleus 27/13 Al has nuclear radius of about 3.6 fm, then 125/32 Te would have its radius approximately as:
• The nuclei of which one of the following pairs of nuclei are isobars?

⚔️ Practice NEET Physics free + battle 1v1 →