EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2019>Q 2

EASY

KEAM

IMPORTANT

Earn 100

Which of the following statements is not a property of nuclear force ?

50% studentsanswered this correctly

Important Questions on Nuclear Physics

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2019>Q 3

Which of the following elements you need to remove to form an isotone family ?

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2018>Q 4

A particle of rest mass

m_{0}

is travelling, so that its total energy is twice its rest mass energy. It collides with another stationary particle of rest mass

m_{0}

to form a new particle. What is the rest mass of the new particle?

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2019>Q 5

The half-life of ${}_{43}{Tc}^{99}$ is $6 h .$ If $12 mg$ of ${}_{43}{Tc}^{99}$ is injected to a patient, after $24 h$ how much $T c$ will be left in the patients body ?

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2020>Q 6

The number of

α

-particles emitted during the radioactive decay chain from

{}_{88}^{226}{Ra}

and ending at

{}_{82}^{206}{Pb}

is

EASY

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2018>Q 7

A decay chain of the nucleus

{}_{92}^{238}U

involves eight

α

-decays and six

β

-decays. The final nucleus at the end of the process will be

MEDIUM

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2020>Q 8

A nucleus, initially at rest, breaks up into two nuclear fragments with their radii in the ratio

2 : 1 .

Then their velocities will be in the ratio

MEDIUM

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2020>Q 9

The ratio of the energy released by

4 kg

of hydrogen at sun by fusion process to

23.5 kg

of

{}^{235}U

in the nuclear reactor by fission process is (Assume energy released per fusion is

26 MeV

and that per fission is

200 MeV

)

MEDIUM

KEAM

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 34 - Nuclear Physics>KEAM 2018>Q 10

A

2 M e V

neutron is emitted in a fission reactor. If it looses half of its kinetic energy in each collision with a moderator atom, how many collisions must it undergo to achieve thermal energy of

0.039 e V

?