NEET UG PHYSICS MCQ: NUCLEI

1 Medium

1 of 1

Analyzing +4 | -1

The half-life period of radioactive element

x

is same as the mean life time of another radioactive element

y

Initially they have the same number of atoms. Then,

View answer and explanation

Correct option: B

y will decay faster than x

Option B (y will decay faster than x) is correct because the mean lifetime is greater than the half-life, implying that element y has a higher decay constant and thus decays faster initially.

More Questions from NUCLEI

Practice All Chapter MCQs →

The ratio of the nuclear radii of elements with mass numbers

\mathrm{216}

and

\mathrm{125}

is In a hypothetical fission reaction

{ }_{92} X^{236} \rightarrow{ }_{56} Y^{141}+{ }_{36} Z^{92}+3 R

The identity of emitted particles

({R})

is: The radius of the nucleus of the atom with A=216 is (take

{R_0}\; = \mathrm{ }1.3fm

) The correct sequence of the increasing wavelength of the given radiation sources is Which of the following nuclear fragments corresponding to nuclear fission between neutron

\left({ }_0^1 \mathrm{n}\right)

and uranium isotope

\left({ }_{92}^{235} \mathrm{U}\right)

is correct: Which of the following has the mass closest in value to that of the positron

1\,\,a.m.u = 931\,\,MeV