Conceptual Questions for Class 12 Physics Chapter 12 Atoms

Conceptual Questions Based on Class 12 Physics Atoms

Conceptual Questions for Class 12 Physics Chapter 12 Atoms

Here we are providing conceptual questions for Class 12 Physics Chapter 12 Atoms. Students should go through each and every question for better understanding.

Q.1. The large angle scattering is possible only due to nucleus. Why?

Solution, α-particles can be scattered through large angles only if they collide against a positively charged heavy particle such as a nucleus.

Q.2. The Rutherford α-particle scattering experiment shows that most of the α-particles pass through almost unscattered while some of them are scattered through large angles. What information does it give about the structure of atom?

Solution. (i) As most of α-particles pass straight, it indicates that most of the space in the atom is empty.

(ii) The large angle scattering indicates that most of the mass and the entire positive charge of the atom is concentrated in a small central core, called nucleus.

Q.3. Why is electron revolving round the nucleus of an atom?

Solution. If the electrons were stationary, they would fall into the nucleus due to the electrostatic attraction and the atom would be unstable.

Q.4. What is the significance of the negative energy of electron in the orbit?

Solution. This signifies that the electron is bound to the nucleus. Due to electrostatic attraction between electron and nucleus, the P.E. is negative and is greater than K.E. of electron. Total energy of electron is negative.
It cannot escape from the atom.

Q.5. When an electron falls from a higher energy to a lower energy level, the difference in the energies appears in the form of electromagnetic
radiation. Why cannot it be emitted as other forms of energy?

Solution. This is because electrons interact only electromagnetically.

Q.6. Explain why the spectrum of hydrogen atom has many lines, although a hydrogen atom contains only one electron.

Solution. A source of hydrogen spectrum has billions of hydrogen atoms. Each hydrogen atom has many stationary states. All possible transitions can occur from
any higher level to any lower level. This gives rise to a large number of spectral lines.

Importance of conceptual questions for class 12 physics

Conceptual questions are of utmost importance in Class 12 Physics for several reasons. These questions focus on understanding the fundamental principles and concepts rather than just rote memorization of equations and formulas. Here are some reasons why conceptual questions are crucial in Class 12 Physics:

Deep understanding: Conceptual questions require students to grasp the underlying principles and theories behind physical phenomena. This leads to a deeper understanding of the subject, making it easier to apply the knowledge to various problem-solving scenarios.
Critical thinking: When students tackle conceptual questions, they are encouraged to think critically and analytically. These questions often involve complex scenarios that demand logical reasoning and creative thinking to arrive at the right answers.
Problem-solving skills: Conceptual questions challenge students to solve unfamiliar and intricate problems. As a result, their problem-solving skills are honed, preparing them to tackle more advanced scientific challenges in the future.
Application of concepts: By answering conceptual questions, students learn to apply theoretical concepts to practical situations. This bridges the gap between theory and real-world applications, fostering a holistic understanding of Physics.
Better exam preparation: Class 12 board exams and competitive entrance exams often include conceptual questions. Preparing for such questions not only improves performance in exams but also sets a strong foundation for further studies in physics-related fields.
Enhanced retention: Understanding concepts leads to better retention of knowledge. Unlike rote memorization, conceptual understanding stays with students for a long time, making it easier to build on that knowledge in the future.
Encouraging curiosity: Conceptual questions often pique students’ curiosity and encourage them to explore the subject further. This can spark an interest in Physics as a whole, leading to a lifelong passion for the subject.
Formulating connections: Conceptual questions help students make connections between different topics and subfields within Physics. This interconnected knowledge is essential for a comprehensive understanding of the subject.
Learning from mistakes: When students attempt conceptual questions, they may make mistakes. However, these mistakes provide valuable learning opportunities, as they highlight areas that need further clarification and understanding.
Building confidence: Successfully answering conceptual questions gives students a sense of accomplishment and boosts their confidence in their Physics abilities.

Conceptual Questions for Class 12 Physics Chapter 12 Atoms

Conceptual Questions for Class 12 Physics Chapter 12 Atoms

Importance of conceptual questions for class 12 physics

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