Free Help in Physics
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
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
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
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.
Einstein’s theory of relativity was beyond any doubt lovely, different from any other theory ever imagined by mankind. Newton described gravity merely as a force acting over a distance attracting any 2 masses, the force proportional to the product of the two masses and inversely proportional to the square of the distance between them. This simple straight forward theory worked well for over two hundred years.
Read more at http://www.plustwophysics.com/problem-with-einsteins-theory-of-relativity/
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
Add more links as comments to this post.
Watch America’s Funniest Videos explaining some Principles of Physics
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?
Let your voices be heard before finalizing the marking scheme.
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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.
Here you go! Do the above with confidence. Practice well, avoid distractions. Eat healthy food. Pray and practice. YOU WILL WIN
Q1. Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,
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
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.
