dual nature of radiation and matter pdf

Dual nature of radiation and matter pdf

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Class 12 Physics NCERT Solutions Chapter 11 Dual Nature of Radiation and Matter

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Text Based Questions(long)

Class 12 Physics NCERT Solutions Chapter 11 Dual Nature of Radiation and Matter

Solutions for other subjects like Chemistry, Biology, Maths, etc. Questions given below provide an ample practice of the concepts of Dual nature of radiation and matter. It is divided topic wise for the convenience of students. Complete the topic and practice the related questions. Photoelectric effect and emission of electron, Work function Threshold frequency , stopping potential, threshold wavelength, effect of intensity of light on emission, effect of potential and effect of frequency on emission.

Dependency of photosensitive surface and Einstein equation of photoelectric emission. See Answers. Particle nature of light, properties of photons and comparison of light in terms of photons. Emission of photons depending on intensity or frequency of light. Calculation of number of photons during the emission. Go back to top. Photoelectric Effect: Emission of electron Photoelectric effect and emission of electron, Work function Threshold frequency , stopping potential, threshold wavelength, effect of intensity of light on emission, effect of potential and effect of frequency on emission.

Photon: Particle nature of light Particle nature of light, properties of photons and comparison of light in terms of photons. Matter Waves: Wave nature of light de-Broglie hypothesis According to de-Broglie a moving material particle some times acts as a wave and some times as a particle.

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Now in part II we will study about the topics given below. Photoelectric Effect and Wave Theory of Light. The phenomena of interference, diffraction and polarisation were explained by the wave picture of light. But the experimental study of photoelectric effect cannot be explained with the help of wave theory of light. The wave picture is unable to explain the most basic features of photoelectric emission. So, photon picture of light a new theory was proposed to explain the phenomenon of photoelectric effect. Photon is a packet of energy or quanta of energy associated with electromagnetic radiation.


Dual Nature of Radiation and Matter particles. They were found to travel with speeds ranging from about to times the speed of light (3 × m/s).


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We have filtered some posts those might answer your query. Please go through them or continue posting. This chapter explains the duality of matter, namely particle and wave.

Text Based Questions(long)

Further, they are all designed with the latest academic year subject material so that any difference in the syllabus is accounted for as well. Together, students will be prepared to answer every type of question like subjective and objective and aim for the best in their last year of school. These main subjects can be very complicated for students and the revision notes for every chapter will allow them to have an expert studying pattern with which they can achieve so much better and also enjoy studying the subject. With the help of revision notes students can revise the syllabus in a concise manner. Short keynotes for Class 12 also contain colour diagrams.

What is the a maximum kinetic energy of the emitted electrons, b Stopping potential, and c maximum speed of the emitted photoelectrons? What is the maximum kinetic energy of photoelectrons emitted? The power emitted is 9. Assume the beam to have uniform cross-section which is less than the target area , and c How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon? How many photons nearly per square metre are incident on the Earth per second? Assume that the photons in the sunlight have an average wavelength of nm. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it.

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Solutions for other subjects like Chemistry, Biology, Maths, etc. Questions given below provide an ample practice of the concepts of Dual nature of radiation and matter. It is divided topic wise for the convenience of students. Complete the topic and practice the related questions. Photoelectric effect and emission of electron, Work function Threshold frequency , stopping potential, threshold wavelength, effect of intensity of light on emission, effect of potential and effect of frequency on emission. Dependency of photosensitive surface and Einstein equation of photoelectric emission.

Each and every question comes with a detailed step by step solution in order to help students to understand the concepts easily without any difficulty. Working on NCERT Solutions for Class 12 Physics Chapter 11 will not only help students to prepare for their board exams but also helps to prepare for engineering and medical competitive entrance exams as well. In this chapter, we will learn about the Dual Nature of Radiation Matter and what is the work function of a metal. The minimum energy needed by an electron to come out from a metal surface is called the work function of the metal. Free electrons in a metal are free in the sense that they move inside the metal in a constant potential This is only an approximation. They are not free to move out of the metal.

Here are all questions are solved with a full explanation and available for free to download. Not only that, but you will also have access to all the study materials and solutions along with absolutely Online Tests to improve your problem-solving speed. Class 12 is an essential milestone in your life as you take any serious decisions about your future study on your performance. Whether you select to be a doctor or engineer, you will have to deal with Physics Part II in every area. Making the concepts of class 12 concrete can immensely help you in obtaining good marks in the CBSE Class 12 board examination as well as in different competitive exams.

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