Physics beckons

Home » CBSE Physics Notes

Category Archives: CBSE Physics Notes

Advertisements

Launching a Friendly Physics Website for Teachers & students: www.physicsbeckons.com

Launching a Friendly Physics Website for Teachers & students

http://www.physicsbeckons.com

Dear Teachers/students,

With the number of posts in the blog growing, the search for relevant content became difficult.In order to make the content well arranged & user friendly, we are launching a website:

http://www.physicsbeckons.com

It classifies as well as clubs the posts pertaining to a particular unit in a single site.

This will facilitate learning & make it enjoyable.

Some special features of the site are:

  • Well defined menu
  • Classification of content (Unitwise)
  • Different sections like Videos, notes, assignments etc.
  • Solved CBSE Physics papers
  • Sample papers for practice
  • MCQs for Conceptual Clarity
  • Tips & Tricks for Low & High achievers
  • A special section on TECHNOLOGY AIDED TEACHING (TAT) to empower the teachers in classroom interactions 

Happy Teaching/Learning!

Advertisements

How can one learn Physics/Science?

Over the last couple of days, quite a few students have sought tips to grasp the concepts in Physics. I am reproducing an earlier blog for their benefit……….
Read on…..
Although a lot can be said and discussed about the same, a very simple and straight forward answer comes to my mind.
By critical thinking alone!
The following excerpts from Feynman’s lecture in Physics say it all.
“A poet once said, ‘The whole universe is in a glass of wine.’
It is very true.
Look at a glass of wine closely enough to see the entire universe.
 
 It contains:
  • the twisting liquid which evaporates depending on the wind and weather, the reflection in the glass; and our imagination adds atoms.
  • a distillation of the earth’s rocks, and in its composition we see the secrets of the universe’s age, and the evolution of stars.
  • a  strange array of chemicals in the wine? How did they come to be?
  • the ferments, the enzymes, the substrates, and the products.There in wine is found the great generalization; all life is fermentation.
Divide this glass of wine, this universe, into parts — physics, biology, geology, astronomy, psychology, and so on to all other branches of knowledge.
Remember:  Nature does not know it!
Each one of has to think and learn on his own. After all  Science has its origin and existence only in our ability to think and analyze.
Not interested?
Enjoy: drink wine; throw the glass  and forget it all”.
THE MESSAGE IS LOUD AND CLEAR.

 No thinking! No Science!

OR

Listen to the message in this melodious style!

Happy learning!

Work; Power & Energy-VII

The present video is in continuation with a new series for CBSE, ICSE & K-12 Physics students on the unit Work, Power & Energy. The topic covered is Relation between Momentum & Kinetic energy.

Click below to watch Work, Power & Energy-VII.

https://youtu.be/wCzKASbWwPQ

Happy learning!

Work, Power & Energy-III

The present video is in continuation with a new series for CBSE, ICSE & K-12 Physics students on the unit Work, Power & Energy. The topics covered are Conservative & Non-conservative forces.

Click below to watch Work, Power & Energy-III

https://youtu.be/nPPkKQoCu2I

Work, Power & Energy-II

The present video is in continuation with a new series for CBSE, ICSE & K-12 Physics students on the unit Work, Power & Energy.

Click below to watch Work, Power & Energy-II

https://www.youtube.com/watch?v=FUCBYDyMcJI

PROJECTILE MOTION (MCQs)

Projectile Motion(MCQs)

Towards Examination (Physics) 2015 with Confidence………(Model Que. Ans.-Set 3 & Practice paper-3)

Dear students,

To give you an idea of the type of questions asked & the model answers thereof, here is the third of a series of solved questions set for you….

Sample Questions with Model Answers-3

Practice paper ( As per CBSE pattern)

Practice Paper-3

Feel free to talk to me for any subject related problem. The contact no. is in the blog. Please stick to the time schedule given in the blog…………

Happy Learning!

For Video lessons; Notes ; Practice material etc…..Visit

http://www.physicsbeckons.wordpress.com

PS: Your feedback is welcome.

Examination 2015: Countdown begins…..IV

The examination season has begun. The first crucial stage of C.B.S.E examination i.e.the practicals must be over by now. I hope you would have done well in the same.

Now is the right time to focus on the preparation for the theory examination.

I would suggest a two-pronged strategy, chapter-wise preparation & revision through CBSE paper.

Revise each unit carefully followed by written practice of the concepts and previous year CBSE problems.

For your benefit, I am posting some important revision problems in Unit I : Electrostatics as under.

Revision Problems in Electrostatics.

Problems from other units will be posted subsequently.

Along with unit-wise revision, it is advisable to go through one paper a day. You will find quite a few solved papers in this blog. I would suggest you to start with 5 marks questions first as these questions are generally direct and often repeated. Go through the questions very carefully and try to analyse the language of the same. A question is well-read if you clearly understand as to what has been asked & more importantly what has  not been asked.

Beginning now in right earnest and continuous effort will help you perform well in the board exams.

Feel free to write to me for any queries you may have.

Happy learning!

All About Atoms & Nuclei………

Dear  Students,

It gives me pleasure to note that the series ‘ALL ABOUT…..’ clubbing the posts for every single Unit started a few days back with All About Electrostatics….as the first post was well received & appreciated.

Taking impetus from the response,a number of other units have also been clubbed.

The present ‘ALL ABOUT…..’ series by the author in ‘physicsbeckons’  is in line with our aim  to help you learn ‘Physics without fear’.

Here is ALL ABOUT Atoms & Nuclei for you…..

*The Videos

ATOMS & NUCLEI-I   (Thomson & Rutherford models of atom, their success and drawbacks, Alpha particle scattering experiment).

ATOMS & NUCLEI-II     ( Bohr’s theory of hydrogen atom, Expressions for orbital radii, orbital speed of the electrons &  Electron energy in different orbits of hydrogen atom. ).

ATOMS & NUCLEI-III    (Emission of spectral series in hydrogen atom)

*The notes

ATOMS & NUCLEI   

To be posted shortly

ATOMS & NUCLEI

Sample problems

*The Assignment

ATOMS & NUCLEI

To be posted shortly

It is advisable to reinforce learning in the unit by trying to solve problems from Previous year papers.

Happy Learning!

All About ELECTROMAGNETIC WAVES…………

Dear friends,

With the number of posts in the blog growing, I revisited the posts and decided to classify & club the posts pertaining to a unit in a single post. This will facilitate learning & make it enjoyable.The first post clubbed the information about the unit on Electrostatics followed by a few other units: Current Electricity; Dual Nature of Matter & Radiation & Wave Optics.

In continuation thereof; here is All About ELECTROMAGNETIC WAVES for you…..

PLEASE FEEL FREE TO PROVIDE ANY USEFUL CRITICAL INPUT ABOUT THE POSTS/BLOG.

All About  ELECTROMAGNETIC WAVES

*Minimum Level of learning in ELECTROMAGNETIC WAVES

As this is a very small & easy to understand unit in CBSE Class XII Physics, it is advisable to prepare it thoroughly. In general the questions asked are also direct.So with a little effort; all the three marks may be up for grab.

*The Videos

ELECTROMAGNETIC WAVES-I   (Introduction of Displacement Current; Equality of Conduction & Displacement Currents).

ELECTROMAGNETIC WAVES-II     (Maxwell’s equations; Prediction of E M Waves; Expressions for wave velocity Representation of EM waves & Transverse character ).

ELECTROMAGNETIC WAVES-III    (Production of E M Waves; The Electromagnetic Wave Spectrum)

*The notes

ELECTROMAGNETIC WAVES   

*The Assignment

ELECTROMAGNETIC WAVES

To be posted shortly

It is advisable to revise the unit by trying to solve Previous year papers.

Happy Learning!