Category Archives: Competitive Exams

Equilibrium and Potential energy

What is Equilibrium

A rigid body is supposed to be in equilibrium if there is no change in translational motion and no change in rotational motion
The general conditions for equilibrium are as follows
(i) The total force must be zero
(ii) The total torque about any axis must be zero.
In many cases it is convenient to consider torques about axes through the centre of gravity.

Types of equilibrium
We can divide the equilibrium into two categories With respect to the state of a body
1. Static equilibrium.
2. Dynamic equilibrium.

Supreme Court cancelled AIPMT results

On Monday 15 June Supreme Court  cancelled  AIPMT results following a month-long investigation into allegations of large-scale irregularities, including leakage of answer keys, by Haryana police. According to reports submitted by the Rohtak Police before the apex court, several candidates availed the benefit of the leaked answer keys electronically. As of now, the police have… Read More »

How to choose a physics book for competitive exams

When you start preparing for competitive exams like PMT, IITJEE, AIEEEi am sure most of you face this question “From which book should I study Physics?”. There are lots of books available in the market in Physics for preparation of exams like IITJEE/AIEEE/PMT and it could be quite confusing choosing from numerous available options.I would advise you all to choose one good book for example NCERT book or concepts of physics by HC Verma for reading text and clearing your concepts in physics.

how to solve assertion reason questions

Almost all the examination carries these type of questions.So these questions are important for success for getting good ranks

Assertion – reason type question has these five different cases
1. Both assertion and reason are true, reason is correct explanation of assertion.
2. Both assertion and reason are true but reason is not a correct explain the assertion.
3. Assertion is true but reason is false.
4. Assertion is false but reason is true.
5. Both are false.

These type of questions test only the concepts of the students. A reasonably well-prepared student can answer these questions in a matter of a few seconds.

Eligibility Criteria for Appearing in JEE (Advanced) 2015

A candidate can attempt JEE (Advanced) a maximum of two times and that too in consecutive years. Therefore, JEE (Advanced) 2015 should be either the candidate’s FIRST attempt OR the SECOND consecutive attempt.

Criterion 4 – Appearance in Class XII (or equivalent) examination.

The candidate should have appeared for the Class XII (or equivalent) examination for the first time in all the subjects in either 2014 or 2015.

Candidates who appeared for the Class XII (or equivalent) examination in 2014 and wish to re-appear for the same in 2015 (either for improvement or because they failed in one or more subjects), will have to re-appear in all the subjects in 2015.

Those who appeared for the first time in their Class XII (or equivalent) examination in 2013 or earlier are NOT eligible. However, candidates whose Class XII (or equivalent) examination Board results for the academic year 2012-13 were declared after June 2013 are eligible to appear for JEE (Advanced) 2015.