CBSE Physics 2007 Board Question Paper solved – Free download

Practising old question paper is good for preparing for the exam. One should be familiar with the pattern and the tpe of questions asked in the board examinations. Download here a solved question paper based on the 2007 CBSE Board examination.

cbse-2007 solved question paper

 

Learn the principles to score better in Physics practicals and viva

Hello! Dear students,
CBSE Practical Exams started on 16th and will be completed by15 Feb. Do you know that Practical marks play an important part in giving you a decent percentage? In this competitive world each and every mark is important and will decide you future. So try your best to score the maximum in practical exam. It’s not very difficult to score 30/30 a perfect 100%. Follow these guidelines and you can,

Records

Teacher talking to student at LSI

Every student is expected to record 15 experiments. 8 from section A and 7 from section B. All these must be done and signed by the teacher in charge. There must be a properly maintained index signed by teacher. The certification is a  must. Your teacher and school Principal should certify that the record book is bonafide with the seal of the school.

Activities are also to be recorded.
Investigatory Project
Every student should also submit a record the investigatory project done during the year. This may be submitted in a file. The report may be handwritten or typed. All the sections of the project like introduction, motivation, principle, hypothesis.etc Bibliography is an essential component of the project work. The project report should also contain a “bonafide’ certificate. As part of the project, there should be some data analysis, graph etc and a conclusion.
Viva Voce

image

The performance in Viva Voce is very important. This is your chance to impress the examiner. For this you need to prepare well. Practice all circuit diagrams and ray diagrams. The principle behind a involved in each experiment is a sure shot.
All the best! Please feel free to ask in case of any doubt. Use the comment column.

Brazuca Physics – A collection of articles and videos on the Physics of Brazuca and Football

Did you know that Football or Soccer is an excellent toll to teach and learn Physics? Here we are giving some links which will help you understand better the use of football in soccer

 

 

  1. http://physicsbuzz.physicscentral.com/2010/11/physics-of-football.html
  2. The Physics behind Brazuca http://www.theguardian.com/sport/ng-interactive/2014/may/14/brazil-2014-the-physics-behind-the-brazuka
  3. https://www.youtube.com/watch?v=m-5CDVdglp4
  4. https://www.youtube.com/watch?v=H5TNkGC4p3Q

Add more links as comments to this post.

How was your CBSE Physics Exam 2014?

How was your CBSE/AISSCE 2014 Physics Exam?

Was it easy, difficult or moderate?

Were there any questions outside syllabus?

Were there any confusing questions?

Were there any errors in question paper?

Respond now!

Let your voices be heard before finalizing the marking scheme.

IP Computer Science eBooks from Class XI and XII

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How to get pass marks in Physics in days?

Some students asked me this. These were students who never passed in any of the Physics tests during the year when they were in class 12.

 

Now that the exams are near, they are eager to pass with least effort.

 

I consoled them, and said, “If you believe and promise to do what I say, you can get more than pass marks in just  days effort.”

 

They agreed.

 

The formula I gave them and which fetched them good marks is listed below.

 

English: Two students studying English at a Ta...

 

  1. There are some derivations and constructions which are commonly asked in exams. With the help of your teacher identify the portions and learn them well. Take atleast fifteen such portions. Write and practice. Remember, these five days can change your future for ever.
  2. Write all formulae with explanation of each term in a paper. Use them to solve atleast five numericals from each chapter.
  3. Write all laws and principles and learn them by heart.  Try to write from memory and make sure that you can do it without any mistake.
  4. Practice all diagrams
  5. Revise whatever you learnt

 

Here you go! Do the above with confidence. Practice well, avoid distractions. Eat healthy food. Pray and practice. YOU WILL WIN

 

 

 

Questions asked in Physics Viva Voce for Class 12 Physics Practical

Q1. Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,2000,5000 etc?

Ans: In this arrangement all natural numbers upto 10000 ohms (and above) can be realized.

1, 2, 2+1=3,2+2=4,5,5+1=6,5+2=7,5+2+1=8,5+2+2=9 etc

Try it yourself to get all numbers from 1 to 10000

Double Folded Resistance coil
Double Folded Resistance coil

Q2. Why wire is double folded in resistance box?

Ans: The resistance wires in resistance box and in standard resistances are double folded and then coiled so as to nullify the effect inductance. When double folded and coiled, in one half the current will be clockwise and in next half the current will be anticlockwise. Therefore, the magnetic induction created by one half will be cancelled by the other half.

Q3. we make coil of wire when finding resistance of wire through metre bridge ?

Ans: This is not correct. If it is to be coiled, it should be done as in Q1.

Normally the wire is stretched on a half meter scale and fixed with terminals (or arranged in some other manner)

If you feel that the wire need to be coiled, then take  care to avoid the magnetic effect.

 

Significance of Infinity

Significance of Infinity in Physics and Life
RKDas (MSc- Physics, Banaras Hindu University, India)

 

Goal:

 

T2i - Infinity

 

The author is trying to prove the existence of infinity and infinite energy in the entire universe. By doing so, he raises some basic questions against the profoundly established concepts of prevalent physics.

 

Introduction to Infinity
In Sanskrit, infinity is termed as ananta, which is something without any limit or end. It is synonymous with Sanskrit term puurna, the full and complete. There is a phonetically similar term apeiron in Greek that stands for potentially unlimited or indefinite.
A specific beauty of the concept of puurna is such that ‘even if a puurna is subtracted or taken out of the puurna, the remainder is but an unreduced puurna itself (puurnasya puurnam aadaaya puurnam eva avashishyate).’ Following the same ideology, a practical statement may be made: the infinity is a one single entity, if there are many infinities, where is the room for placing more than one such infinity? Possibility of multiple infinities defies the basic requirements of infinity, which is not finite or limited.

 

Review of Zero and Infinity
Zero is a number. The zero, just as a number does exist in reality. It is such a small number or the smallest possible quantity that it is equal to nothing. Zero is an imaginary concept. In reality, ‘zero content’ does not exist; the zero is a no entity; the zero is without a true existence. There is no true zero. Zero is like a pure untruth.
Zero is a greatly useful tool for arithmetic operations. Continue reading “Significance of Infinity”