Thursday, November 29, 2012

Class XI Physics Practical Exam Viva Voce

Hi Students!

The practical examinations are accompanied by viva voce by the external/internal examiner to ensure the genuineness of their work and to analyse the understanding of the subject by the students.

So it is important to prove yourself by performing well in the viva voce.

The following questions will be of some help to prepare well for it. Please remember that the questions following the first is based on your answer to the first question. (However, there are some examiners who come with some questions written on their diary or paper and blindly ask from them. For them, please prepare the questions which are printed on the practical manual.)

Questions based on screw gauge experiments

  1. Define leastcount of a screw gauge

Monday, November 26, 2012

Download Free Physics studymaterials and simplified textbooks

You can download excellent study materials in Physics described in an easy to understand manner using simple language and with lot of illustrations for better grasp from the links below.

Eligibility criteria for IIT JEE 2013 (Advanced)

In respect of those students who passed their Board exam for the first time in 2012, the eligibility criteria for joining any of the IITs or ISM Dhanbad will be 60% marks in their 12th Board or equivalent (55% for SC/ST/PwD candidates). For those candidates who appear in their Board exams for the first time in 2013, the eligibility criteria will remain ‘top 20 percentile of the successful candidates’ in their Boards, category-wise. This will be a one-time exception for JEE (Advanced) 2013 only.

For those students who passed their 12th Board exams in 2012 but are re-appearing in the 2013 Board exams with a view to improve their performance, 60% rule will apply if they use their 2012 Board exam results and ‘top 20 percentile’ rule will apply if they use their 2013 Board exam results. This too will be a one-time exception for JEE (Advanced) 2013 only.

In case the percentile score is not available from testing agencies [such as Pre-University exam conducted by a University, two-year course of the Joint Services Wing of the National Defence Academy, General Certificate Education examination (London/Cambridge/Sri Lanka), High School Certificate Examination of Cambridge University, International Baccalaureate Diploma (Geneva), Senior Secondary School Examination of National Institute of Open Schooling, three year Diploma recognized by AICTE / State Board of Technical Education and any Public School/Board/University examination in India or in any foreign country recognized as equivalent to the 10+2 system by the Association of Indian Universities (AIU)] the CBSE score for top 20 percentile of the successful candidates in the student’s category will be used.

For all Foreign Nationals, the eligibility criteria based on the qualifying examination shall be 60% aggregate marks.

Websites of IITs

IIT Bombay:
IIT Delhi:
IIT Guwahati:
IIT Kanpur:
IIT Kharagpur:
IIT Madras:
IIT Roorkee:

The application fee for JEE (Advanced) – 2013 is (i) Rs. 1800 (One thousand eight hundred rupees only) for the GN/OBC/OBC-NCL candidates, (ii) Rs. 900 (Nine hundred rupees only) for the SC/ST/PwD candidates and (iii) No fee for the female candidates (all categories). For candidates appearing from Dubai centre, the fees will be US$ 200. This fee can be paid at any branch of State Bank of India (SBI) having Core Banking Solutions (CBS). The process of paying the application fee must be completed between 8th May 2013 (Wednesday) to 13th May 2013 (Monday).

Download the complete information Brochure here

JEE (Main) 2013 and JEE (Advanced) 2013 - Important links and information

The Joint Entrance Examination (Main) - 2013 will be conducted by the JEE Apex Board for admission to Undergraduate Engineering Programmes in NITs, IIITs and other Centrally Funded Technical Institutions etc. Now, AIEEE will be known as JEE (Main) and IIT - JEE as JEE (Advanced).

In order to appear in JEE (Main) and/or JEE (Advanced) 2013, the candidates are required to apply only online. The online registration form will be available on JEE Main website from 8th November, 2012 to 15th December, 2012.

The last date to register for JEE (Advanced) - 2013 (along with the required information and applicable fee) is 13th May, 2013.

All the candidates aspiring to take admission in the undergraduate programmes at IITs and ISM Dhanbad, for the year 2013 will have to appear in the Paper-1 of JEE (Main) - 2013, which will be conducted by JEE Apex Board during the month of April, 2013 (both online and offline). After the declaration of the scores of JEE (Main) - 2013, the top 1,50,000 candidates (including all categories) are required to register online at to appear for the JEE (Advanced) – 2013.

The syllabus will be the same as of IIT-JEE 2012.

Date and Time of Exam  JEE (Advanced) - 2013

2nd June, 2013

PAPER – 1:9.00 – 12.00 Hours (IST)
PAPER – 2:14.00 – 17.00 Hours (IST)

Offline examination (Pen and Paper Based Examination) for Paper 1 and Paper 2

JEE Main 2013
Date of Examination          Paper             Subjects                                                           Timings                                    Duration

07.04.2013                          Paper 1         Physics, Chemistry & Mathematics       0930-1230 Hours(IST)    3 Hours
07.04.2013                          Paper 2          Mathematics – Part I

Aptitude Test – Part II &

Drawing Test – Part III                            1400-1700 Hours(IST)         3 Hours

Type of Examination
JEE (Main) – 2013 shall have two papers, Paper-1 and Paper-2. Candidates may take Paper-1, or Paper-2, or both as per the course(s) they are seeking admission to.

For admission to NITs, Centrally Funded Technical Institutions (CFTIs) like IIITs etc. and other participating Institutions, the merit/rank list shall be prepared based on 40% weightage to school Boards marks in class 12th or equivalent examination and 60% weightage to JEE(Main). The weightage to school Board/Equivalent examination marks shall be considered only after normalization.

Tuesday, November 20, 2012

A lesson of life from Elasticity

What is elasticity?

When an external force (called the deforming force) is applied to bring about changes in the size or shape of a body, the body resists the change. A force is developed inside the body (called the restoring force) which tries to bring the body back to the original position. The property of a body by virtue of which it regains its original configuration on removal of deforming forces is called elasticity.

What is the cause of elasticity?

We can explain elasticity from the intermolecular forces. See the graphs below Light bulb showing the variation of potential energy with intermolecular distance and the other showing the variation of intermolecular force with intermolecular distance.


The graphs show that when the intermolecular distance is optimum, the forces are neither attractive nor repulsive – the molecules are in equilibrium. If the distances are forcefully decreased by employing an external agency, the intermolecular force becomes repulsive.

If the intermolecular distance is increased, the force becomes attractive.

What is the the lesson to learn from here?

The human relations last6 as long as the optimum distances are maintained!

When you try to intimidate your friends and relatives by unnecessarily trying to increase the intimacy against their wish, you are actually spoiling the relation. The more you try to become closer (crossing the limits), the stronger will be the repulsion.

If you go further away from the equilibrium (no attraction no repulsion situation), then they try to attract you back until you  break away.

When there are two close friends living far away, their relationships are maintained. If they decide to live together in the same apartment, you can see how fast they break away!

Learnt a lesson?

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Tuesday, November 6, 2012

A Video on Archimedes Principle.


Bust of Archimedes

Principle states that whenever a body is partially or completely immersed in a liquid it experiences an outward force (called buayant force or upthrust) which is equal to the weight of liquid displaced by the immersed part of the body. now offers excellent articles on Courses, Educational Opportunities, Career Opportunities, Personality Development and more. A must visit site for all those who want to grow. The members can also post their articles but they will be published only after approval from the admin team.


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