dual nature of matter and optics question and formulae

8/12/2019 Dual Nature of Matter and Optics QUESTION and FORMULAE

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Mastering Dual Nature of Radiation and Matter & Atoms and Nuclei (For

Class XII)

Units such as Dual Nature of Radiation and Matter & Atoms and Nuclei are given low weightagebut they are highly scoring if one remembers the formulae, definitions and graphs.

Unit 7: Dual Nature of Radiation and Matter (4 marks)

Concepts Question base

Photoelectric effect Numericals, Graphs

De Broglie equation Numericals

Davisson Germer Experiment The experiment, Graphs

Q: An electron is accelerated through a potential difference of 64 volts. What is the de-Brogliewavelength associated with it? To which part of the electromagnetic spectrum does this value of

wavelength correspond? (CBSE 2010, 2 marks)

This question can be easily solved if you know the application of the formula:

Unit 8: Atoms and Nuclei (6 marks)

For mastering this unit you need to master the formulae. Make a list of all the important formulaein this unit with at least one application in numerical solving. Questions from this units are

basically definitions, graphs and formula based numericals.

Q:The energy levels of an atom are as shown below. Which of them will result in the transition

of a photon of wavelength 275 nm?Which transition corresponds to emission of radiation ofmaximum wavelength? (CBSE 2009, 3 marks)

The formula E = hc/ is sufficient to give you three marks in this question.

So, for this unit make sure you go through Rutherfords model, Bohrs model, Hydrogen spectra,

Radioactive decays, Nuclear reactions (fission and fusion).
http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/http://blog.meritnation.com/2013/03/03/mastering-dual-nature-of-radiation-and-matter-atoms-and-nuclei-for-class-xii/


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Follow these simple things and we are sure that youll manage to add the entire 24 marks fromthese units into your account.

To revise the formulae based on these units, click on the link:Formula Sheet ( Unit 6, 7, 8 )

Important Topics and Formulae in Ray Optics and Wave Optics (For Class XII)

Dear students,

Having just a couple of days left for examination, we believe that your preparation must be at itspeak. Give a quick but attentive glance to the important topics and formulae from the section

Optics.

Ray Optics:Spherical lens numerical, Microscope, Telescope, Ray Diagrams, Snells Law,Image Formation by Spherical Mirrors, Reflecting Telescope

Wave Optics:Diffraction, Huygens Principle, Polarization: Brewsters Law, Lens Formula,Youngs Double Silt Experiment

For quick reference, here is a list of the formulae that are involved in various calculations in

these two chapters:
http://blog.meritnation.com/2012/02/29/physics-scoring-tips-units-6-7-8/formula-sheet2/http://blog.meritnation.com/2012/02/29/physics-scoring-tips-units-6-7-8/formula-sheet2/http://blog.meritnation.com/2012/02/29/physics-scoring-tips-units-6-7-8/formula-sheet2/http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/http://blog.meritnation.com/2012/02/29/physics-scoring-tips-units-6-7-8/formula-sheet2/


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http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/optics121/


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Ray Optics and Wave Optics together can bring you 14 marks. So, get yourself thorough with the

concepts and practice numerical problems including the ray diagrams.
http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/optics42/http://blog.meritnation.com/2013/03/02/important-topics-and-formulae-in-ray-optics-and-wave-optics-for-class-xii/optics32/

dual nature of matter and optics question and formulae

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