Ch 12 Atoms NCERT Solutions Class 12 Physics

NCERT Solutions For Class 12 Physics Chapter 12 Atoms

You can download the NCERT Solutions for Class 12 Physics Chapter 12 Atoms in PDF below. Prescribed textbook by CBSE for Chapter 12 Atoms is standard XII NCERT course book for Physics.

Question 12.1:
Choose the correct alternative from the clues given at the end of the each statement:
(a) The size of the atom in Thomson’s model is ………. the atomic size in Rutherford’s model. (much greater than/no different from/much less than.)
(b) In the ground state of ………. electrons are in stable equilibrium, while in ………. electrons always experience a net force. (Thomson’s model/ Rutherford’s model.)
(c) A classical atom based on ………. is doomed to collapse. (Thomson’s model/ Rutherford’s model.)
(d) An atom has a nearly continuous mass distribution in a ………. but has a highly nonuniform
mass distribution in ………. (Thomson’s model/ Rutherford’s model.)
(e) The positively charged part of the atom possesses most of the mass in ………. (Rutherford’s model/both the models.)
Answer
(a) The sizes of the atoms taken in Thomson’s model and Rutherford’s model have the same order of magnitude.
(b) In the ground state of Thomson’s model, the electrons are in stable equilibrium. However, in Rutherford’s model, the electrons always experience a net force.
(c) A classical atom based on Rutherford’s model is doomed to collapse.
(d) An atom has a nearly continuous mass distribution in Thomson’s model, but has a highly non-uniform mass distribution in Rutherford’s model.
(e) The positively charged part of the atom possesses most of the mass in both the models.

NCERT Solutions for Class 12 Maths
NCERT Solutions for Class 12 Maths
NCERT Solutions for Class 12 Maths

Updated New NCERT Books For Class 12 Physics PDF Download

NCERT Textbook Solutions, Answers, CBSE Help Book for Unit abc

Central Board of Secondary Education governs the teaching pattern for XII Physics. For all the schools affiliated to CBSE Prescribed book for Unit abc is NCERT for Class 12 Physics. NCERT Solutions For Class 12 Physics Unit abc will help them in preparation for 10th Standard Physics Exams. Aiming at securing high marks with improved basic fundamental knowledge in Physics should be the goal. Important concepts of Unit abc in PDF is available for free download.