HARD
12th West Bengal Board
IMPORTANT
Earn 100

When a heavy nucleus with mass number A=240 breaks into two nuclei A=120, energy is released in the process. Why?

Important Questions on Nuclear Physics

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 47
In β -decay the experimental detection of neutrinos (or antineutrinos) is found to be extremely difficult. Why?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 48
Identify the nature of the 'radioactive radiations', emitted in each step of the 'decay chain' given below

XZA→YZ-2A-4⟶YZ-2A-4→WZ-1A-4

HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 49
Explain, with the help of a nuclear reaction in each of the following cases, how the neutron to proton ratio changes during (i) α -decay, 
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 49
Explain, with the help of a nuclear reaction in each of the following cases, how the neutron to proton ratio changes during (ii) β -decay ? 
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 2
What is radioactivity? State the three properties of β -rays what do you mean by the equivalence of mass and energy How does it explain the energy released in nuclear fission? Explain the phenomenon of artificial transmutation of elements, with examples.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 3
Explain what is meant by atomic number and isotope. Write down the law of radioactive disintegration. Explain the meaning of the terms, decay constant and half-life. What is the relation between half-life and decay constant? What is nuclear fusion? Give two examples of this process.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 4
Discuss how nuclear fission is utilised for the benefit of the mankind.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 22 - Nuclear Physics>EXERCISE 22>Q 6
Write short notes on : (i) artificial radioactivity.