The penetrating powers of ${\rm{\alpha }},\,\,{\rm{\beta }}\,\,{\rm{and}}\,\,{\rm{\gamma }}$ radiations, in decreasing order are

${\rm{\gamma }},\,\,{\rm{\alpha }},\,\,{\rm{\beta }}$

${\rm{\alpha }},\,\,{\rm{\beta }},\,\,{\rm{\gamma }}$

${\rm{\beta }},\,\,{\rm{\gamma }},\,\,{\rm{\alpha }}$

JEE PHYSICS MCQ: NUCLEI

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The penetrating powers of

\mathrm{\alpha },\,\,\mathrm{\beta }\,\,\mathrm{and}\,\,\mathrm{\gamma }

radiations, in decreasing order are

View answer and explanation

Correct option: B

\mathrm{\gamma },\,\,\mathrm{\beta },\,\,\mathrm{\alpha }

Option B (

\rm{{\gamma}},\,\rm{{\beta}},\,\rm{{\alpha }}

) is correct because gamma rays have the highest penetrating power, followed by beta particles, and then alpha particles.