Internal energy of a substance is the sum of kinetic energy and  potential energy of the molecules. kinetic energy  is directly...

In the syllabus, we are required to understand the orders of magntiude of various objects. Though we may no need to memorise the exact...

Fleming's Right-Hand Rule is another useful rule for understanding electromagnetic induction. This rule helps us determine the direction...

Flemeng's Left Hand Rule, using your left hand, with the thumb, 1st finger and 2nd finger all 90 degrees to one another. This is covered...

Drawing ray diagrams for converging lens come in many forms. But the basic concepts needed are the 3 rays (which have rules to follow) to...

1) When a ball is thrown up and it comes down When the ball leaves the hand, there is no upward force acting on the ball. The only force...