Dual Nature of Radiation and Matter Class 12 Case Study Questions Physics Chapter 11

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Last Updated on December 26, 2024 by XAM CONTENT

Hello students, we are providing case study questions for class 12 physics. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 12 physics. In this article, you will find case study questions for cbse class 12 physics chapter 11 Dual Nature of Radiation and Matter.

Chapter	Dual Nature of Radiation and Matter
Type of Questions	Case Study Questions
Nature of Questions	Competency Based Questions
Board	CBSE
Class	12
Subject	Physics
Unit	Unit 7 Dual Nature of radiation and Matter
Useful for	Class 12 Studying Students
Answers provided	Yes
Difficulty level	Mentioned
Important Link	Class 12 Physics Chapterwise Case Study

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Table of Contents

Case Study Questions on Dual Nature of Radiation and Matter

Questions

Question 1:

The discovery of the phenomenon of photoelectric effect has been one of the most important discoveries in modern science. The experimental observations associated with this phenomenon made us realise that our, ’till then’, widely accepted picture of the nature of light. The electromagnetic (wave) theory of light-was quite inadequate to understand this phenomenon. A ‘new picture’ of light was needed and it was provided by Einstein through his ‘photon theory’ of light. This theory, regarded light as a stream of particles. Attempts to understand photoelectric effect thus led us to realise that light, which was being regarded as ‘waves’, could also behave like ‘particles’. This led to the idea of ‘wave-particle duality’ vis-à-vis the nature of light. Attempts to understand this ‘duality’ and related phenomenon, led to far reaching and very important developments, in the basic theories of Physics.

Read the given passage carefully and give the answer of the following questions:

Q. 1. Which of the following phenomenon explain the wave nature of light?
a. Interference
b. Diffraction
c. Polarisation
d. All of these

Q. 2. Wave-particle duality is shown by:
a. light only
b. matter only
c. Both a. and b.
d. None of these

Q. 3. The experiment to explain the wave nature of light i.e., electromagnetic wave theory is given by:
a. Hertz
b. Einstein
c. Lenard
d. Huygens’

Q. 4. The concept of photoelectric effect given by Einstein explains that the light is a:
a. photon
b. wave
c. particle
d. Both b. and c.

Answers

1. (d) All of these

2. (c) Both a. and b.

3. (a) Hertz

4. (c) particle

Also check

Case study questions for other chapters of class 12 physics is given below.

We hope the given case study questions for Dual Nature of Radiation and Matter Class 12 helps you in your learning.

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Topics from which case study questions may be asked

Dual Nature of Radiation
Photoelectric Effect
- Hertz and Lenard’s Observations
- Einstein’s Photoelectric Equation
- Particle Nature of Light
Experimental Study of Photoelectric Effect
Matter Waves
- Wave Nature of Particles
- de-Broglie Relation

For a given metal surface, there exists a certain minimum frequency of the incident radiation below which no emission of photoelectrons takes place. This frequency is known as threshold frequency of that material.

For further practice on case study questions related to Dual Nature of Radiation and Matter Class 12 Physics, we recommend exploring the link given below.

Practice More Case Study Questions on “Dual Nature of Radiation and Matter”

Frequently Asked Questions (FAQs) on Dual Nature of Radiation and Matter Case Study Questions

Q1: What are case study questions for CBSE examinations?

A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.

Q2: Why are case study questions important for understanding class 12 physics chapters?

A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.

Q3: How should students approach answering case study questions for CBSE?

A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of chemical reactions and equations, and formulate well-supported solutions or responses.

Q4: Are there any resources available online for students to practice case study questions on class 12 physics chapters for CBSE exams?

A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. If you need more case study questions for your preparation, then you visit Physics Gurukul website.

Q5: How can students effectively prepare for case study questions on “Dual Nature of Radiation and Matter” for CBSE exams?

A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.

Q6: How can teachers incorporate case study questions on “Dual Nature of Radiation and Matter” class 12 physics into classroom teaching?

A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of “Dual Nature of Radiation and Matter”.

Q7: Define the term “intensity” in photon picture of electromagnetic radiation.

A7: Intensity of light is defined as the light energy passing through per unit area per unit time. Its SI unit is watt/metre².

Q8: What is photoelectric effect?

A8: When an electromagnetic radiation (such as UV rays, X-rays, etc.) of suitable frequency is incident on a metal surface, electrons are emitted from the surface. This phenomenon is called photoelectric effect.

Q9: Define the term “stopping potential” or “cut-off potential” in relation to photoelectric effect.

A9: The minimum negative potential of anode at which photoelectric current becomes zero is called stopping potential.

Q10: State one reason to explain why wave theory of light does not support photoelectric effect?

A10: The wave theory of light does not support photoelectric effect because the kinetic energy of photoelectrons does not depend on the intensity of incident light.

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