Category Archives: Competitive Exams

This page shows all the competitive examination for students from X to XII. It contains information on all engineering examination ,medical examination and competitive examination news.  It also show information about KVPY,NTSE, Olympiad

Frequently Asked Questions about JEE (Main)

Question 1: What is the new scheme of engineering entrance examination ?
Ans. It has been decided to hold a Joint Entrance Examination (JEE) from the year 2013 for admission to the undergraduate programmes in Engineering in two parts, JEE-MAIN and JEE-ADVANCED. Only the top 150000 candidates based on performance in JEE MAIN will qualify to appear in the JEE ADVANCED examination.
Admissions to IITs will be based only on category-wise All India Rank (AIR) in JEE ADVANCED, subject to condition that such candidates are in the top 20 percentile (category wise) in their respective Boards/Qualifying Examinations.

Admission to NITs will be based on 40 % weightage

IIT admission body okays centre’s plan

The Joint Admission Board (JAB) of the IITs on Saturday endorsed the formula backed by the Centre to resolve a standoff with the IIT faculty over changes in the joint entrance examination (JEE) norms.

The JAB, responsible for working out the details of the JEE, consists of IIT directors and JEE chairmen who supported the ministry’s plans from the start. The revised plan is likely to be approved by the IIT Council, which meets on June 27

What is heat?

1)The mean energy transferred between the two system as a result of pure thermal interaction is called Heat.It is the transfer of energy from the higher temperature object to a lower temperature object.

2) The total amount of energy transferred as heat is conventionally written as Q for algebraic purposes. Heat released by a system into its surroundings is by convention a negative quantity (Q < 0); when a system absorbs heat from its surroundings, it is positive (Q > 0).

3) Heat is similar to work as both represent ways of transferring the energy.

Uses of Capacitor

1) The main purpose of the capacitor is to store charge . If an instantanous strong current is to be flown in a circuit,the best way would be to connect the terminals of the circuit to a charge capacitor

2 A capacitor can store electric energy when disconnected from its charging circuit, so it can be used like a temporary battery. Capacitors are commonly used in electronic devices to maintain power supply while batteries are being changed. (This prevents loss of information in volatile memory.)

How to find workdone by several forces acting on a object

This can be done in these simple steps

1) First draw a free body diagram of the body showing all the forces on it.

2) Carefully choose a X-Y coordinate system so that direction of the motion or direction of force lies in X or Y direction. This will simplfy the Problem

3) Applying Newton’s law find out any unknown forces