NEET UG PHYSICS MCQ: NUCLEI

1 Hard

1 of 1

Application +4 | -1

A sample contains

10 \mathrm{~mg}

each of two substances

A

and

B

whose atomic weights are in the ratio

1: 3

. If the half lives

A

and

B

are

5 \mathrm{~s}

and

10 \mathrm{~s}

respectively then the ratio of amount of

A

and

B

after

20 \mathrm{s} \frac{m_1}{m_2}

\frac{1}{x}

. Find

x

View answer and explanation

Correct option: A

Option A (4) is correct because it calculates the ratio of the remaining masses of substances A and B after 20 seconds, considering their different atomic weights and half-lives.

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