Q4.We know a current carrying conductor placed in a magnetic field experiences a force due to which the conductor moves. How do we think the rod displaces if - (a) current in rod is increased (b) a strong horse shoe is inserted (c) length of the rod is increased.

Acidity is a discomfort in the beginning and a menace later on creating serious discomforts in life requiring medications. The medicines in turn createtheirown side effects and complicate the acidity problem. To control the problem there are some simple habits. Before coming to the simple ways to check acidity let us see why acidity is caused. It is to be remembered that all stomach pains need not be acidity. The pains cane be due to several reasons. So proper diagnosis is important. But there are some discomforts which will help us to identify to a great extent about thepossibilityof acidity.