NCERT Solutions For Class 12 Physics Chapter 13 Nuclei: Download FREE PDF!

NCERT Class 12 Physics Chapter 13 Nuclei Solutions: With the 2025 board exams approaching fast, it’s time for students to review the syllabus and start practising questions and sample papers. This article provides students with solutions to the NCERT Class 12 Physics Chapter 13 on Atoms, all in one place. These solutions will aid in grasping the key concepts covered in the chapter, including theoretical and numerical problems. Students can find solutions for all exercises in Chapter 13, helping them to understand and practice the content thoroughly.

Also Check:

NCERT Solutions For Class 12 Physics Chapter 13 Nuclei

 1. Obtain the binding energy (in MeV) of a nitrogen nucleus (¹⁴ ₇N), given m  (¹⁴₇N) =14.00307 u 

2. Obtain the binding energy of the nuclei ⁵⁶ ₂₆Fe and ²⁰⁹ ₈₃ Bi in units of MeV from the following data:

 m (⁵⁶ ₂₆Fe ) = 55.934939 u

m ( ²⁰⁹ ₈₃ Bi ) = 208.980388 u

3. A given coin has a mass of 3.0 g. Calculate the nuclear energy that would be required to separate all the neutrons and protons from each other. For simplicity assume that the coin is entirely made of
⁶³ ₂₉Cu atoms (of mass 62.92960 u).

4. Obtain approximately the ratio of the nuclear radii of the gold isotope ¹⁹⁷ ₇₉ Au and the silver isotope ¹⁰⁷ ₄₇ Ag.

5. The fission properties of ²³⁹ ₉₄Pu are very similar to those of ²³⁵ ₉₂U. The average energy released per fission is 180 MeV. How much energy, in MeV, is released if all the atoms in 1 kg of pure ²³⁹ ₉₄Pu undergo fission?

6. Calculate the height of the potential barrier for a head-on collision of two deuterons. (Hint: The height of the potential barrier is given by the Coulomb repulsion between the two deuterons when they just touch each other. Assume that they can be taken as hard spheres of radius 2.0 fm.)

7. From the relation R = R₀A ^1/3, where R₀ is a constant and A is the mass number of a nucleus, show that the nuclear matter density is nearly constant (i.e. independent of A).

Students can check the questions and download the answers from the rest of the PDF given below: 

• NCERT Solutions For Class 12 Physics Chapter 13 Nuclei

CBSE Class 12 Physics Syllabus 2024-25

 This is the revised syllabus for Physics Class 12 board students. Students can take a look at these chapters and make important notes.