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# HC Verma Bohr’s Theory and Physics of Atom Solutions (Chapter 43)

HC Verma Solutions for Class 12 Physics Part-2 Chapter 43 Bohr’s Theory and Physics of Atom consists of detailed solutions to all the questions available in each exercise. This chapter has 4 exercises with a total of 75 questions. Major topics covered in these questions include early atomic models, hydrogen spectra, difficulties with Rutherford’s model, the wave function of an electron, quantum mechanics of hydrogen atom, nomenclature in atomic physics, and laser.

All the solutions are prepared by expert teachers of Physics. Referring to HC Verma Class 12 Physics Solutions, you can revise the complete syllabus at one go and excel in your CBSE Board exams and other competitive exams like IIT JEE and NEET. Practice these questions well to make your concepts stronger.

In this HC Verma Bohr’s Theory and Physics of Atom Solutions, some questions are difficult to understand on the first go. At Instasolv, we provide you with the pointwise, table-wise, or paragraph-wise separation for the exercise questions to make you understand easily. Through HC Verma Solutions, we make sure that you perform better in the board exams and in other competitive exams.

## Important Topics for HC Verma Concepts of Physics Part-2 Solutions Chapter 43: Bohr’s Theory and Physics of Atom

Hydrogen Spectra

The hydrogen spectrum was described by Neil Bohrs. He stated that the structure of an atom is highly significant to even quantum theory. So, the hydrogen spectrum is the group of all occurrences that can be produced by an electron “jumping” from a higher orbit to an orbit of lower energy.

Rutherford’s Model

Rutherford’s atomic model is also referred to as the nuclear model of the atom. In this theory, it has been explained that the protons and neutrons, which consist of nearly all of the mass of the atom, are situated in the nucleus at the centre of the atom. The electrons are spread around the nucleus and reside in most of the volume of the atom.

Difficulties with Rutherford’s Model

The main problem that was faced in Rutherford’s model was that he couldn’t clarify why negatively charged electrons persist in orbit when they should directly fall into the positively charged nucleus. Later, this problem would be solved by Niels Bohr in 1913.

The Wave Function of an Electron

A wave function is a function that challenges to define the total energy of an electron. This contains all of the possible energy states of the electron and the total time that the electron stopovers in each state.

Laser

Laser refers to an appliance that creates light using a technique of visual magnification created on the enthused emission of electromagnetic radiation is known as laser. The term “laser” initiated as an acronym for “light intensification by moving emission of radiation”.

Atomic Nomenclature

To name compounds and to define molecular formulae from the name, information of the periodic table is helpful.

Atomic Number = number of protons.

Mass Number = number of neutrons + number of protons.

Number of Electrons = number of protons

Quantum Mechanics of Hydrogen Atom

Quantum mechanics now forecasts what measurements can disclose about atoms. The hydrogen atom also indicates the modest possible atom, from the time when it contains only one proton and one electron.

### Exercise-wise Discussion for HC Verma Concepts of Physics Part-2 Solutions Chapter 43: Bohr’s Theory and Physics of Atom

Exercise 1 – Short Answer Type Questions

This exercise of Chapter 43 HC Verma Bohr’s Theory and Physics of Atom Solutions contains a total of 10 questions which are short answer type questions. These questions are based on the early atomic models, hydrogen spectra, and difficulties with Rutherford’s model.

Exercise 2 – Objective Type Questions I

HC Verma Bohr’s Theory and Physics of Atom Solutions Exercise 2 contains 13 multiple-choice questions with solutions. So, you can clear all your doubts related to the wave function of an electron, quantum mechanics of hydrogen atom by just one click.

Exercise 3 – Objective Type Questions II

Exercise 3 contains a total of 6 multiple-choice questions. In these questions, you will have two or more statements correct. Also, these questions will help you in the JEE exam preparation.

Exercise 4 – Long Answer Type Questions

This exercise set helps you understand the concept of the nomenclature in atomic physics, laser, and more. This exercise contains a total of 46 long answer type questions with solutions.

## Why Use HC Verma Concepts of Physics Part-2 Solutions Chapter 43: Bohr’s Theory and Physics of Atom by Instasolv?

• HC Verma Solutions for Class 12 Physics are beneficial in clearing your every little confusion in grasping the ideas.
• At Instasolv, we provide concise and comprehensive answers so that they can be easily understood.
• All the answers in the HC Verma Solution include high-quality reasoning and language, textual information, and creativity that are taught to be applied by NCERT.
• All these solutions have been crafted by expert Physics teachers who have great years of experience.
• Follow the HC Verma Concepts of Physics Part 2 Solutions provided by Instasolv to score well in your CBSE exams as well as the competitive exams.
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