NEET UG PHYSICS MCQ: NUCLEI

1 Hard

1 of 1

Application +4 | -1

Consider a nuclear fusion reaction

A+B \rightarrow C

. Nucleus

A

is moving with

\mathrm{KE}=5\, \mathrm{MeV}

and collides with nucleus

B

moving with

\mathrm{KE}=3 \,\mathrm{MeV}

and forms nucleus

C

in excited state. Find the KE (in

\mathrm{MeV}

) of

C

nucleus just after its formation given that its excitation energy is

10.3 \mathrm{~MeV}.

Take masses of nuclei of

A, B

and

C

25.0,10.0,34.99

amu respectively. [Take :

1 \,\mathrm{amu}=930 \,\mathrm{MeV}

]

View answer and explanation

Correct option: A

Option A (7) is correct because the kinetic energy of the combined nucleus C is equal to the total kinetic energy of the reactants minus the excitation energy of the product.

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